Algorithms

DC Code and Coffee is an inclusive, informal co-working session. It's community-led and community-run by devs, for devs. People of all skill levels attend. Whether you’re dev-curious, aspiring, or a professional developer, we’d love to have you! Come chat or learn to code on a Sunday afternoon with coffee and cool-inclusive people. Bring your laptop! We typically meet every month on the weekend. **Join our online community!** For all things Tech in DC and to get latest updates and tech events from the DMV area, join the [DCTech Slack](https://dctech.chat/). All DC Code & Coffee announcements are in the #dccodecoffee channel **How it works** Near the beginning of the event, we do an introduction circle. You say your name, what you can help others with, and what you would like help with. You can also share job opportunities. After the introduction circle, everything is self-organized. **Event Host and Directions** We are meeting in the big meeting room at the back of the library.

**As divine, immortal Soul, we have an inborn connection to the Creator. This unbreakable bond of love, support, and guidance can allow us to live life productively, joyfully, and adventurously. However, it can be challenging to remember and use our gift of spiritual communication. Singing HU – a sacred sound and ancient mantra – can help us recognize, strengthen, and consciously maintain this deep connection.** **During a lively, interactive session, we’ll explore how HU, the Sound behind all sounds, can:** **• Fill us with peace and re-ignite our dreams.** **• Help us face challenging situations with confidence.** **• Bring more love into our life now.** **We look forward to seeing you then. If you wish, you can download a free ebooklet about the HU at: www.eckankar.org/wp-content/uploads/2021/12/HU Your-Key-to-Spir-Living_ebooklet.pdf** **A flyer for this event is available for you at:** **https://eck-va.org/wp-content/uploads/2026/02/Poster-for-March-8th-2026-HU Key-to-Spiritual-Living-Rev-1.pdf**

Title: What Is Space Density? From Medium Ontology to the Spacetime Constant K Date: March 8 2026 10:00 am - Noon EDT Abstract: Spacetime plays an active role in gravity, wave propagation, and quantum behavior, yet physics rarely treats it as a physical medium with intrinsic properties such as density or inertia. This missing layer creates a major conceptual gap—especially when interpreting large-scale gravitational anomalies that are often attributed to dark matter. In this talk, Lynn will propose a clear conceptual framework for what it means for spacetime itself to possess a density-like property, and Lynn will explain why Unified Field Theory (UFT) naturally encodes this property through the constant K, called the spacetime background inertial intensity constant. Lynn will introduce a space-density constant μₛ as a universal property of space itself—independent of matter, energy density, or gravitational sourcing. However, μₛ cannot be inserted directly into field equations, because it belongs to the ontological level: it describes what space is, not how spacetime responds. To influence dynamics, μₛ must be expressed geometrically. This leads naturally to K, which carries the same physical meaning but operates at the level required by geometric field dynamics. This is a change in representation—not the addition of new physics. This approach provides an alternative way to interpret dark-matter-like effects. Instead of requiring unseen particles, gravitational anomalies can be viewed as consequences of spacetime’s intrinsic rigidity and its global, cumulative response in large coherent systems such as disk galaxies. In local, weak-field environments, standard Newtonian and relativistic gravity remains an effective approximation. The goal of the talk is not to present a final empirical model, but to clarify the physical meaning of spacetime constants and open discussion between UFT and mainstream theoretical physics. Keywords: Spacetime ontology; space density; intrinsic spacetime properties; Unified Field Theory (UFT); spacetime background constant K; geometric response; gravitational coupling; dark-matter-like phenomena Brief Biography Lynn Lou Beran is a Senior IT Security Analyst and an author, translator, and editor working at the intersection of science, engineering, and communication. She translated and edited multiple editions of Zhang XiangQian’s Unified Field Theory and co-authored recent manuscripts developing a geometric, motion-based view of physical reality. Lynn’s broader work focuses on making advanced ideas accessible without sacrificing rigor, and on connecting conceptual insight to testable predictions and practical tools.

Spring forward and come write with us! Daylight saving time starts 2:00 am March 8 so remember to set your clock forward. This is the sign you've been waiting for. Come write with us Sunday at 7:30 am at Kaldi's Social House in Arlington. Kaldi's opens at 7. Grab a coffee and join the group! We generally have 10 to 14 writers attend each week, and new folks are welcome to drop in anytime. Intros start at 7:30 am. We will write for one hour. After writing, feel free to debrief, share thoughts or get advice. Our meetups are a safe space for writers to work on their craft. No one will read or critique your writing. Kaldi's Social House website: https://www.kaldissocialhouse.net/ \* Resource \* Many thanks to Justin for putting together a shared file of resource discussed at the meetings. Feel free to add to it! [https://docs.google.com/spreadsheets/d/13LONNjZvsO5hEXM7NsBnWCgy3GgPgjAbQxE0lPxp7hc/edit?usp=sharing](https://docs.google.com/spreadsheets/d/13LONNjZvsO5hEXM7NsBnWCgy3GgPgjAbQxE0lPxp7hc/edit?usp=sharing)

Use Promo code WINTERME to receive $5.00 off! Purchase tickets here: [https://www.prosinthecity.com/event/speed-dating-washington-dc-16066](https://www.prosinthecity.com/event/speed-dating-washington-dc-15393) Tonight, Professionals in the City is hosting an event for singles in their 30s and 40s. Our Speed Dating Washington DC events are among our most popular singles events so don't miss out! During Speed Dating Washington DC you'll date for approximately one hour, meeting smart and intriguing members of the opposite sex as you spend a few minutes with each new acquaintance. Meet singles and know right away whom you mutually match with. After the speed dating, join us for a night of socializing and more interactions. You’ll also be able to spend time with someone you felt you clicked with during one of your speed dates. There will be a cash bar for this eventful evening, so come and meet other single professionals like yourself and have the time of your life! Then, after the event, use our exclusive online system from home to choose your matches from the people you met at the event. Without disclosing your email address, you'll be able to send messages through our system to anyone who attended. So come to Speed Dating Washington DC and meet that special someone you’ve been looking for. Check in is at 7:00 and the dating begins at 7:20. Please check in at 7:00 so you have a chance to mix and mingle before the dating begins. Numbers are limited at this event so sign up soon!

**NOW ONLINE** The weekly Sunday morning (10:30 am to 12 noon) class begins with a welcome, short reflection on an aspect of the teachings, and includes an arriving meditation (15 minutes) that will often incorporate poems and may end with a reflection or question. The opening meditation is followed by an invitation to each person to share their name and a few words (for example, what is alive for them right now or what their intention is for the class or the day). The sharing has been a powerful support to help welcome new people, get to know each other, and build community/sangha. Following a brief period of mindful stretching/movement, we finish with a longer meditation (25-30 minutes) and final reflections on the teachings, sharing, Q&A, and announcements. Class participants are welcome to stay and engage with other members of the community or adjourn to a neighboring restaurant or coffee shop. This space is inclusive, everyone is welcome, and we invite you to bring with you all aspects of yourself. Learn more here: https://imcw.org/Calendar/Event-Calendar/EventId/3686/e/drop-in-class-livestreamed-19-apr-2020

Welcome to Sunday Connection, a monthly **movement class and community potluck**. Join master teacher Ann Kite **in person on Sundays at 1:00 PM** at Carderock Springs Swim & Tennis Club. **Dates** * Sunday, March 8 * Sunday, April 12 * Sunday, May 17 Dance is both an individual and shared experience. You’re welcome to interact as much or as little as you’d like. Please arrive with heartfelt respect for yourself and everyone on the floor. **Potluck** Bring a dish to share, plus a plate, fork, and cup to keep it simple and low-waste. If bringing food isn’t easy this week, just bring yourself. Your presence is the real nourishment. **Purchase tickets here:** https://www.annkite.com/sundays

**The MOOTS Routt 45 Demo Experience:** *A Full Size Run (50cm–60cm)* One bike for any occasion. Every size for our riders. **We are stoked to announce a special collaboration with our MOOTS factory representative for an exclusive demo day at Handy Bikes Retail Showroom.** We aren't just bringing a couple of bikes; we’ll have an entire size run of the legendary Routt 45 ready for you to throw a leg over. **The Bike: The Routt 45** **The Routt 45 is the "do-everything" titanium gravel machine**, named after the unpredictable mix of surfaces found on Routt County Road 45 in Steamboat Springs. Whether it’s forest tracks, chunky gravel, or the trails where the maps end, this bike is built to handle it all with: **-Modern Gravel Geometry:** *A longer top tube paired with a shorter stem for stability and precision.* **-All-Day Comfort:** *A relaxed, upright posture that lets you stay in the saddle longer.* **-Massive Clearance:** *Room for up to 50c-wide tires to soak up the chatter.* **-Ti-Flexibility:** *Compatible with both 1x and 2x drivetrains and featuring discreet fender eyelets.* **Find Your Perfect Fit** Titanium is a lifetime investment, and getting the fit right is the first step. Our rep will be on-site to help you dial in your setup across the full range: *Available Sizes: 50cm \| 52cm \| 54cm \| 56cm \| 58cm \| 60cm* **Don't Just Read the Reviews—*Ride the Legend*** It’s rare to see a full size run of MOOTS in one place, let alone get to take them for a ride. This is a unique opportunity to skip the 'parking lot test' and actually feel how handcrafted US-made titanium handles. Whether you're dreaming of your *'forever bike'* or just want to see what the hype is about, this is the day to do it.

⚠️ **IMPORTANT: You must sign up and buy a ticket here to attend:** [https://groupvibe.com/](https://groupvibe.com/) **This is a curated, small-group meetup make new friends in Washington.** Each meetup brings together 4–6 like-minded people for casual conversations over brunch. We use the Groupvibe platform to organize and ensure everyone’s a good fit. 👉 **To attend, you’ll need to complete registration via this link:** [https://groupvibe.com](https://groupvibe.com) Once you register, and **buy a ticket or become a Groupvibe member**, we’ll share the exact location and match you with your group. **Why this works:** \* Smaller groups make real conversations easier \* Matching helps avoid awkward dynamics **Note:** RSVPs here on Meetup don’t reflect total attendance. Many attendees register directly via our website. This meetup is organized by **Groupvibe**, a small team passionate about helping people form meaningful friendships offline.

This is an absolute beginner Bachata group class. It is specifically designed for those with no prior experience in Bachata and participations does not require having a partner. $25 per person for 90 minute class. [Click Here to Sign Up](https://form.jotform.com/250681156839162) Every Other Sunday: 2:00 pm to 3:30 pm Beginner Bachata.

**Join us in Falls Church for conversations that go beyond small talk.** Higher Grounds – Falls Church is where this growing network of gatherings began: a space for thoughtful, authentic dialogue about what matters most. Whether we’re exploring the nature of happiness, the challenges and possibilities of midlife, spirituality, culture, capitalism, parenting, or the role of art and travel in a meaningful life, every conversation is shaped by the people in the room. There’s no set leader or rigid agenda—just a shared commitment to listen as much as we speak. We start with brief introductions focused on what makes you *you* (not your LinkedIn bio), then dive straight into whatever is on people’s minds. The direction of each meetup emerges organically, making every event unique. MANDATORY: PLEASE REVIEW OUR COMMUNITY GUIDELINES IN THE GROUP DESCRIPTION. Everyone is expected to engage in respectful conversations and listen deeply as well as share. We have a zero tolerance policy of sexual harassment and hate speech. Come ready to share, reflect, and connect with others in Falls Church who are also seeking deeper conversations. **Suggested Questions: Life Stages & Transitions** 1. What did you think you'd have figured out by now that you're still completely winging? 2. When did you realize your parents' advice was for a world that no longer exists? 3. What are you finally old enough to stop pretending to care about? **Suggested Questions: Identity After the Roles** 1. Who are you when nobody needs anything from you? 2. What dream keeps resurfacing even though the "practical" time has passed? 3. How do you handle having the freedom you always said you wanted? **Suggested Questions: AI & Being Human** 1. What human experiences will AI never truly understand? 2. If machines handled all your have-to's, what would you actually do? 3. What becomes more precious as everything becomes automated? **Suggested Questions: Belief & Meaning** 1. What certainties have you given up, and what rushed in to fill that space? 2. How has knowing someone who died changed how you live? 3. What do you believe now that would shock your younger self? **Suggested Questions: The Modern Psyche** 1. What anxiety do you carry that previous generations didn't have? 2. Which of your survival strategies are you ready to retire? 3. What uncomfortable truth about happiness did it take you years to accept? **Suggested Questions: Work & Purpose** 1. When did you stop believing that your job would complete you? 2. What would you do for work if money and status weren't factors? 3. How has your definition of "making it" changed over the years? **Suggested Questions: Relationships & Connection** 1. What relationship dynamic do you keep recreating, and why? 2. When did you realize your parents were just people trying their best? 3. What kind of loneliness doesn't go away even when you're with others? **Suggested Questions: Time & Mortality** 1. What are you running out of time to say or do? 2. How differently do you spend your time knowing it's finite? 3. What will you regret not trying, even if you fail? **Suggested Questions: Society & Culture** 1. What social convention do you follow even though it makes no sense? 2. Which generation do you understand least, and what might you be missing? 3. What aspect of how we live now will seem insane in 20 years? **Suggested Questions: Personal Philosophy** 1. What rule for life did you create after learning something the hard way? 2. When did you stop believing that everyone else had it figured out 3. What paradox about life have you learned to live with?

Put a spring in your step and march into spring with your fellow autistics at Cleveland Park Library! Conveniently located at 3310 Connecticut Ave. NW just blocks from Cleveland Park Metro on the Red Line in Washington, DC, the library is in the safe and walkable Cleveland Park neighborhood. We will meet in Meeting Room 1, which is located on the first floor of the library. Food is prohibited, but covered drinks are permitted. I will be bringing my UNO card game and PowerPuff Girls board game. Feel free to bring games if you like, but it's not required. We typically go out to lunch afterwards at Fat Pete's, a BBQ place which also has salads, pizza, and other non-BBQ options. PJ, the owner, has personally told me to call him and let him know when we're coming so he can sit us in a sensory-friendly space. If PJ says the place is too noisy, there are many other restaurants in Cleveland Park. Fat Pete's is located at 3407 Connecticut Ave. NW in Washington, DC, just across the street and a block away from the library. If you're running late or get lost, please call or text me at 202-802-3238.

**To receive future event updates, register on Luma:** **[https://luma.com/6qii7007](https://luma.com/6qii7007)** Let's discuss a podcast by Anders Ericsson, author of the renowned book "Peak: Secrets from the New Science of Expertise". Anders demonstrates that talent is overrated and peak achievement is dependent on a specific type of learning called "deliberate practice", and that your skill in any area is a function of the quantity and quality of “mental representations” you have for that activity. We explore the science of learning and of skill mastery -- how it happens, and how to do it. **Please watch this YouTube video (try 1.25x speed) before joining the discussion:** [https://www.youtube.com/watch?v=qiBne5EGBQ8](https://www.youtube.com/watch?v=qiBne5EGBQ8) If more than 8 people join the discussion, we will break out into smaller groups. **(max 8 people per group)** \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- 1. **Mastery requires focused quality over mere repetition. How can we ensure our daily efforts are intentional enough to foster genuine growth?** 2. **Effective mentors provide the roadmap for stretching our abilities. How might we better identify the guides who can point out our hidden obstacles?** 3. **Immediate feedback loops are essential for identifying and correcting technical errors. How can we build systems that provide the rapid insights necessary for our collective improvement?** 4. **Peak performance often requires unlearning habits that limit our ultimate potential. What fundamental methods could we refine to ensure our foundations support world-class excellence?** 5. **Growth occurs when we consistently set goals just beyond our current comfort zones. How do we determine the ideal balance between manageable challenge and productive discomfort?** 6. **Elite performance is sustained through intense concentration followed by restorative rest. How can we better value recovery as a vital component of our highest achievements?** \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- To provide an enjoyable experience for fellow participants, here are three ground rules during discussion events: 1. Step up and step back. (If you feel that you’ve been talking too much, step back to listen more. If you feel that you’ve been relatively quiet, step up to share your perspective or ask a question) 2. Listen to understand, not to respond. 3. Be open-minded and value differences.

Join us for a fun Sunday afternoon as we explore two of Ballston’s most unique local spots! 📍 The Game Plan • 01:30 PM | Coffee at Gute Leute ☕ We’ll kick things off at this highly acclaimed Korean coffee shop (this is their first U.S. location), known for their “bubble coffee” and amazing "coffee omakase" experience. • 02:30 PM | Lunch at Himalayan Wild Yak 🏔️ After our caffeine fix, we’ll take a short stroll over to this great spot for Nepalese and Tibetan food. Think momos, flavorful noodle and curry dishes, and yes, if you’re adventurous—WILD YAK!!! 🐂 🚇 Getting There • Metro: Both spots are an easy walk from the Ballston-MU Station (Orange/Silver lines). • Parking: Street parking is available, or you can use the Ballston Mall garage (only $1 for 3 hours). • RSVP: Please keep your status up to date so we can provide the restaurant with an accurate headcount for the table. Can't wait to see you there!

Window functions have nothing to do with the Windows operating system but provide a “window” to a result set when used in SQL queries. They are powerful, set-based methods to view data in unexpected ways. Window functions provide easy, set-based solutions to solve some common problems: * Using running totals * Performing operations in intervals * Identifying data gaps and islands * Performing aggregates without losing detail Many people are confused by window functions and do not know how to use them properly. This session will explore window functions, how they work, and how to use them. Demonstrations with several examples will solidify how window functions can simplify queries and make them more powerful.

We are excited to host Guided Meditations on Sundays at 6 pm in our Ashram/Gallery/Home! !! !! Everyone wants to know what kind of God we worship and what kind of meditation we do. We worship the GOD that LOVES US! We understand that god is an energy and it lives in us as us. Our meditations guide others to actually experience that energy! xoxo We don't just talk about peace, love and affection, we experience it :) Also we are a home not a business, so we enjoy building community one friend at a time. We always build in time for people to mingle & develop friendships! xoxo Much Love, Frank Tennyson Namaste, Frank Tennyson http://photos3.meetupstatic.com/photos/event/a/f/9/9/600_447824953.jpeg

Discover Kiro, AWS’s innovative development environment that adapts to your workflow. Whether you prefer specification-driven development or a more intuitive, vibe-based approach, Kiro empowers you to build applications your way. In this session, speakers will explore Kiro’s core functionality and its evolution through re:Invent 2025, along with demonstrations of prompts used to create APIs, hooks, and steering documents. In the latter part of the session, watch as we build a complete example from scratch, showcasing Kiro’s agentic AI workflow in action for spec-driven development and vibe coding. What You'll Learn - Core Kiro concepts and development philosophy Feature evolution: pre and post re:Invent 2025 Practical examples: API creation, hooks, and steering docs Live coding demonstration with real-time problem solving Who Should Attend - Developers, solutions architects, and technical leaders interested in modern AWS development tools and AI-assisted coding workflows. **Speakers Bio:** Matthew Jorat: Matthew Jorat is a Customer Solutions Manager at AWS with nearly three decades of expertise in AI, cloud transformation, migration, modernization, IT, technology, and business. His career spans infrastructure engineer, solutions architect, security auditor, customer success director, support and services director, and operations officer. He was an early adopter of AWS services as a customer, and his current role at AWS uniquely blends his technical and business skills as he partners with executive teams to translate strategic priorities into measurable business outcomes through cloud adoption, AI implementation, and operational excellence. Matt leads end-to-end AI initiatives for enterprise customers, identifying high-impact use cases and maintaining relentless focus on measurable ROI. He holds eight AWS certifications and serves as Adjunct Professor at Franklin University teaching cloud computing and AWS architecture. His expertise encompasses GenAI, agentic AI systems, migration, modernization, and optimization strategies that drive transformation at scale. [https://www.linkedin.com/in/mattjorat/](https://www.linkedin.com/in/mattjorat/) Girish Bhatia: Girish Bhatia is a seasoned technology delivery leader with deep expertise in cross-domain program management. He holds multiple AWS certifications, including AWS Certified Solutions Architect – Associate, AWS Certified Developer – Associate, and AWS Generative AI Practitioner, and is also an AWS Community Builder. Girish brings over two decades of experience in the information technology industry. Throughout his career, Girish has led major technology-driven business transformation from modernizing on-premises applications to driving large-scale cloud migrations. His work includes API-based integration platforms, data-center and mainframe modernization, and enterprise cloud adoption initiatives. Based in Columbus, Ohio, Girish works at a tech-forward fintech company. He is passionate about AWS serverless architectures, Generative AI and emerging cloud technologies. An avid learner and builder, he continues to explore and apply the latest innovations in AWS to help organizations accelerate their digital transformation. https://www.linkedin.com/in/girishbhatia/[https://www.linkedin.com/in/girishbhatia/](https://www.linkedin.com/in/girishbhatia/) **THANK YOU** *Franklin University* for hosting our meetup! To learn more about *Franklin University*, please visit their website: https://www.franklin.edu/ **DIRECTIONS** Franklin University Fisher Hall 300 E. Main St, Columbus, OH 43215 Map: https://maps.app.goo.gl/jxjBA2hUmS5qrvhq8 Parking is FREE! Please park in Lot C in front of Fisher Hall. See attached map. NOTE: Map the address only. When mapping with Google Maps it may use the Fisher Hall at OSU, which is NOT correct. **Want to sponsor the pizza and/or bar tab?** Please contact me if you would like to sponsor this meetup's pizza and/or bar tab: angelo@mandato.com

Rev. Steven Clevenger is an ordained spiritualist minister with over 40 years experience as a Spiritual Healer, Clairvoyant and Spiritual Teacher, educated and trained at the White Lily Chapel. Rev. Siobhan Wolf Shaffer is an ordained spiritualist minister and certified medium and healer with over 20 years experience. She began her development in 1988 in Pennsylvania and continued when she moved to Ohio in 1998 where she studied at Rays of Lights Church with Rev. Steven Clevenger. Our full worship services consist of an inspirational lecture, healing meditation, and messages from the spirit world that serve to demonstrate evidence of eternal life. Please visit our Official Church Website (http://raysoflightchurch.com) for more information.

Come out to Improving for our monthly iOS and Mac meetings. This Month's Presentation: **Python Tips and Tricks on iOS** **Mike Kennedy** What is Cocoaheads (http://cocoaheads.org/)? CocoaHeads is a group devoted to discussion of Apple Computer's Cocoa Framework for programming on MacOS X and iOS (including the iPhone, iPad and Apple Watch). During monthly meetings, members present on their projects and offer tutorials on various programming topics. What is BuckeyeCocoa (http://buckeyecocoa.org/)? BuckeyeCocoa is a group of Objective-C/Swift developers/enthusiasts. We host monthly Cocoaheads and near-weekly NSCoder meetings in Columbus, Ohio. The meetings are free to attend. Presentations! Presenters welcome! We are always in need of people willing to present material. Any Swift and/or Objective-C related topic is welcome. Times can be 5 minutes (i.e. lightning talks) to a maximum of 2 hours. Interested? Contact info is on the BuckeyeCocoa website. To volunteer for a presentation contact us at @BuckeyeCocoa on Twitter. Follow us on Twitter! @BuckeyeCocoa (https://twitter.com/#!/Buckeyecocoa/) For more information: http://buckeyecocoa.org/

We'll meet at The Capital One Café, 167 Easton Town Center, Space A-103. This is in the main mall where the Microsoft store used to be, on your left if you're standing at the bottom of the AMC Theater escalator. Join us on Sunday for an hour of uninterrupted wordmaking! • What we'll do Join us for an hour of writing! We’ve discovered that it’s strikingly helpful to write with other writers. See if it’s true for you at noon on Sundays. Be it a book, blog, script, essay, dissertation, resume, melody, poem or just plain work stuff, you are invited to write it with us. No one will see what you've written or give you unsolicited advice. Instead of just thinking about writing, come and get some real writing done. SCHEDULE: 12:00 - quick intros. 12:10 - timer starts: write for 1 hour. 1:10 - chat / take off / keep writing. OPTIONAL SOCIALIZING happens at 1-1:30ish. Writing is very solitary. Connecting (and sometimes even commiserating) with other writers is a cool thing. BEING LATE IS OKAY: just show up and get settled, then check-in with me after the session. If you were on time, please be willing to make room for the friendly latecomer. Happy writing and I look forward to seeing you! • What to bring Whatever you need to be able to write! Bring earbuds/earplugs if you want to block noise or the occasional conversation by other patrons. Electrical outlets are limited, so charge your devices before whenever possible. See you at The Café on Sunday!

Bring your work or your hobby, hang out, and code with us. Follow @buckeyecocoa for more information.