Cryptography
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Frequently Asked Questions
Yes! Check out cryptography events happening today here. These are in-person gatherings where you can meet fellow enthusiasts and participate in activities right now.
Discover all the cryptography events taking place this week here. Plan ahead and join exciting meetups throughout the week.
Absolutely! Find cryptography events near your location here. Connect with your local community and discover events within your area.
Cryptography Events Today
Join in-person Cryptography events happening right now
Yoga Therapy: My Body Don't Bend That Way - Therapeutic Yoga
Think you aren't flexible enough for yoga? Afraid to get onto the floor? Living with physical aches or restricted range of motion? Then this is the perfect yoga class for you! Explore your body's strengths in a fun, supportive environment while maintaining and growing your range of motion, flexibility, balance, strength, and sense of peace. All are welcome in this therapeutic class.
Come ready to try new things, laugh, ask questions, and support each other.
**Please reserve your spot at www.piesfitnessyoga.com**. The session is offered both InStudio and OnLine. The Zoom link for the OnLine session will be emailed 15 minutes before class starts to those who are registered at www.piesfitnessyoga.com. **Sign up for sessions must be made at least 2 hours prior to class.**
The address is 1322 Prince St Alexandria, VA 22314
Our entrance is located on the side of the building, parallel to West St. **Street parking is available and additional parking is located at Shiloh Baptist church, spaces 36,37,38,39.** The church is located across the street from the studio, on the corner of Duke St. and West St.
Discount is available to seniors, teachers, students, emergency responders, and military. All can save by purchasing class packs.
AI in Practice Social: Happy Hour & Dinner at Upside on Moore
Weโre excited to continue building AI in Practice with our monthly social! ๐
Each month, weโll host an informal happy hour and dinner at Upside on Moore in Rosslyn. Come join fellow AI builders, professionals, and curious minds for a relaxed evening of conversation, connection, and community.
Whether youโre working on AI systems, advising on responsible adoption, or just interested in how AI is shaping law, compliance, finance, healthcare, defense, software, mission-driven organizations, or public service โ this is a chance to meet like-minded people and help shape what this community becomes.
๐ธ Drinks and food are available for purchase at the venue.
๐ค No formal agenda โ just introductions, networking, and sharing what excites us about AI in practice.
Weโre so grateful for the early enthusiasm, and we look forward to seeing you each month as this community grows!
**Date, Time & Location**
5:30 PM โ 7:30 PM
Tuesday 14 April 2026
Upside on Moore
1831 Moore Street
Arlington, VA 22209
NVPPA Photographers - Board Meeting - We Need Committee Chairs - Volunteer!
RSVP Required.
We'd like to add you to our management team. We are a highly motivated, enthusiastic, and smart-working team. Please let us know if you're qualified...
Please read and understand the Member's Promise (https://www.meetup.com/Northern-Virginia-Professional-Photographers-VA-DC/about/). We are a volunteer organization so members are only entitled to what each board member and committee member donates of their time, dedication, and enthusiastic attention.
We need committee chairs / volunteers in the areas of:
โข Monthly Room Setup
โข Hospitality
โข Registration and Attendance
review Attendance Reconciliation procedure
โข Membership
review backup procedures
review where primary copy of database resides
review doc, "NVPPA Membership QA - Policy and Procedure"
review lapsed membership procedures and policy
review meeting cancellation credit and procedure
review Google Drive folder organization
review Welcome Letter procedures, template, and when this is used
review PayPal payment notification procedure
review taking payments at a monthly meeting/workshop
โข Marketing/Communications, including Email Marketing
โข PPA Affiliation Committee
โข Competition
Some other specialized roles in Social Media Marketing, SEO, branding, newsletter programs, membership outreach & administration, public relations ads & campaigns, website development, data administration, and database design are needed.
We welcome your suggestions, and as a result, you must offer your time to work on them plus other prioritized projects that will benefit the organization, and thus, your business.
3 QUALIFICATIONS NEEDED TO ATTEND A BOARD MEETING:
โข Is this your first S-C meeting? If so, please contact Philip Brasch via his profile (or email) prior to attending the meeting. We invite responsible, leader-members!
โข Are you a Gold Member invested in NVPPA? These Board / S-C meetings are specifically for invested members (dues-invested) only. If you're not, please join NVPPA by clicking the Donate button in the sidebar.
โข Have you attended at least 2 monthly meetings? In order to have knowledgeable and informed leaders of NVPPA, we request that you attend at least 2 monthly meetings or NVPPA events prior to your participation on the S-C.
You can also review our Mission Statement, Membership Objectives, and Member's Promise. (https://www.meetup.com/Northern-Virginia-Professional-Photographers-VA-DC/about/) Please take our poll for BENEFITS (https://www.meetup.com/Northern-Virginia-Professional-Photographers-VA-DC/polls/251822/) as a member of NVPPA.
I look forward to your commitment to the growth and prosperity of NVPPA and its members...
Best!
Philip Brasch, President & Founder
(If you don't have my email or phone number, first please contact me with your email and a message via my Meetup Profile.)
Holy Cross-Words Toastmasters Club, Silver Spring
Holy Cross-Words Toastmasters Club (http://1341379.toastmastersclubs.org/) is open to all. The club meets 2nd and 4th Tuesday of each month at 5:30pm via Zoom Meeting:
Meeting ID: 848 0115 8880
Password: 996403
In addition, on 4th Tuesday of each month for an in-person meeting at the Professional and Community Education Center (PCEC) at Holy Cross Hospital. The PCEC is located on the first floor of Holy Cross Hospital, 1500 Forest Glen Rd, Silver Spring, MD 20910
Secrets to Meditation: An Introduction to the Happiness Program
Discover the power of your breath to manage your mind and experience instant peace & calm.
Join a 60-minute free Workshop and get a glimpse of the Sudarshan KriyaTM-
The breathing technique that is revolutionizing the lives of millions.
What youโll discover at โBeyond Breathโ
โ A taste of the Sudarshan KriyaTM, a breathing technique taught in the Happiness Program
โ An instant energy booster that awakens & relaxes your mind - Take it home and practice daily!
โ The peace & calm of a unique guided meditation
โ Secret keys to manage your mind
โ The power of surrounding yourself with positive, like-minded people.
You can use your breath to master your thoughts and emotions - the key to managing the quality of your day.
The Happiness Program
At the end of this workshop you may enroll into the Happiness Program (3 days, 3 hours each day) to learn the Sudarshan KriyaTM, a science-backed, rhythmic breathing technique through which you can:
Tap into a reservoir of energy and use it as you please!
Relieve deep-rooted stresses and anxieties
Uplevel your productivity
Overcome emotional blocks, move on from past events and shed limiting beliefs
Heal your body & gain power over your mind
Experience the true state of meditation
Learn more about the Happiness Program & the Sudarshan KriyaTM in our introductory workshop 'Secrets to Meditation'.
Instagram: artoflivingDMV
aolf.live/secretstomeditation
Secrets to Meditation: An Introduction to the Happiness Program
Discover the power of your breath to manage your mind and experience instant peace & calm.
Join a 60-minute free Workshop and get a glimpse of the Sudarshan KriyaTM-
The breathing technique that is revolutionizing the lives of millions.
What youโll discover at โBeyond Breathโ
โ A taste of the Sudarshan KriyaTM, a breathing technique taught in the Happiness Program
โ An instant energy booster that awakens & relaxes your mind - Take it home and practice daily!
โ The peace & calm of a unique guided meditation
โ Secret keys to manage your mind
โ The power of surrounding yourself with positive, like-minded people.
You can use your breath to master your thoughts and emotions - the key to managing the quality of your day.
The Happiness Program
At the end of this workshop you may enroll into the Happiness Program (3 days, 3 hours each day) to learn the Sudarshan KriyaTM, a science-backed, rhythmic breathing technique through which you can:
Tap into a reservoir of energy and use it as you please!
Relieve deep-rooted stresses and anxieties
Uplevel your productivity
Overcome emotional blocks, move on from past events and shed limiting beliefs
Heal your body & gain power over your mind
Experience the true state of meditation
Learn more about the Happiness Program & the Sudarshan KriyaTM in our introductory workshop 'Secrets to Meditation'.
register: http://aolf.live/introSKY
Cryptography Events This Week
Discover what is happening in the next few days
Vibe Coding & OpenClaw
โThis meetup is for anyone building with OpenClaw (& Claude Code) or experimenting with other AI tools to create agents that can act and make decisions on their own. If you havenโt tried these yet, come hang out, ask questions, and see what others are building. Weโll trade notes, troubleshoot setups, and explore what it takes to run these systems openly on the web instead of inside closed platforms. Bring your laptop, grab some power, and jump into a night that feels part LAN party, part live build session, where people test ideas and show what their agents can actually do.
๐ [RSVP on LUMA](https://luma.com/53dx7no1)
Weโll also have some fun by running a live test to see if a few of our agents can send Bitcoin back and forth and talk about why thatโs a meaningful step for autonomous AI. Itโs a chance to connect the dots between open AI tools, Bitcoin, and the wider goal of creating technology that no one can turn off.
๐ [RSVP on LUMA](https://luma.com/53dx7no1)
Yoga Therapy: My Body Don't Bend That Way - Therapeutic Yoga
Think you aren't flexible enough for yoga? Afraid to get onto the floor? Living with physical aches or restricted range of motion? Then this is the perfect yoga class for you! Explore your body's strengths in a fun, supportive environment while maintaining and growing your range of motion, flexibility, balance, strength, and sense of peace. All are welcome in this therapeutic class.
Come ready to try new things, laugh, ask questions, and support each other.
**Please reserve your spot at www.piesfitnessyoga.com.** The session is offered both InStudio and OnLine. The Zoom link for the OnLine session will be emailed 15 minutes before class starts to those who are registered at www.piesfitnessyoga.com. **Sign up for sessions must be made at least 2 hours prior to class.**
The address is 1322 Prince St Alexandria, VA 22314.
Our entrance is located on the side of the building, parallel to West St. **Street parking is available and additional parking is located at Shiloh Baptist church, spaces 3,5,7,9.** The church is located across the street from the studio, on the corner of Duke St. and West St.
Discount is available to seniors, teachers, students, emergency responders, and military. All can save by purchasing class packs.
Foundations of Localized Symmetry Mathematics
Title: Foundations of Localized Symmetry Mathematics
Date: April 18 2026 Noon - 14:00 EST
Summary: The moment you use Euclidโs definitions of points and distances in any of your mathematical axioms, all that follows is assured to produce some level of nonsensical results when applied to the foundations of physics. The reason is not complicated: Euclidโs definitions are deeply mired in accepting as a โgivenโ the very concepts that emerge only in well-defined inertial frames, which in turn are local instances of symmetries that are always finite and context dependent. In this talk, Terry will discuss how reframing mathematics in terms of symmetries that, as in the real world, are finite, composite, and dependent on self-observation (acceleration), results in a richer and far stranger set of mathematics in absolute conservation of quantum numbers generate local and global symmetries โ the opposite of Noetherโs theorem โ that in turn create the emergent classical phenomenal such a particles, fields, space, and time.
Speaker: Terry Bollinger is a computer scientist with BS, MS, and professional degrees from the Missouri University of Science and Technology.
Studio 151 Photographers Event: Create, Connect & Lunch
10:00 AM - Meet & Create
Weโll start with networking, content creation and more. This includes BTS photos, updated headshots, and in-action shots. Weโll use both indoor and outdoor spaces as available.
12noon - Lunch + Networking
After the morning session, weโll head to a local restaurant for lunch and continued networking and conversation.
If the weather is nice, weโll be outdoors. If it rains, weโll use the studio.
Bitcoin Book Club: End Times by Peter Turchin
Join the Bitcoin District Book Club! We meet every month to explore new and exciting rabbit holes by reading books that are popular with bitcoiners.
Join us for a deep dive into End Times: Elites, Counter-Elites, and the Path of Political Disintegration by Peter Turchin. In this thought-provoking session, weโll explore the structural forces that have historically led to societal instabilityโand why Turchin believes we are entering such a period today.
Drawing on his work in โcliodynamicsโ (the quantitative study of history), Turchin examines cycles of rising inequality, elite overproduction, and political fragmentation. Weโll discuss how internal competition among elites and growing public discontent have repeatedly destabilized societiesโfrom ancient Rome to modern Americaโand what this might mean for the decades ahead. For those interested in macro trends, power structures, and long-term societal patterns, this book offers a compelling framework for understanding todayโs increasingly chaotic world.
Buy the book on [Amazon](https://a.co/d/097mab73)
**Event Notes:**
* Discussion Starters: Weโll kick things off with a few key questions around elite dynamics and societal cycles, but feel free to bring your own perspectives.
* Future Reads: Let us know if you have recommendations for future book club selections! Weโll add them to the list posted on our website.
* Afterwards: Feel free to join us at Pubkey after the meeting to hang out, continue the conversation, and grab some food!
**Getting There:**
* ๐ด๐ข๐ก Gallery Place/Chinatown + 2 min walk
* Parking: Street & garage parking available nearby
Potential Applications of Negative Radiation Pressure and 2WQC
Title: Potential Applications of Negative Radiation Pressure in Astronomy, Medicine and 2WQC
Date: April 19 2026 10:00 am - Noon EDT (16:00 - 18:00 CET)
Abstract: While we are used to heating and pushing with light, there is also optical cooling and pulling. I will talk about negative radiation pressure,
potential ways to generate it, and its novel applications, like non-ionizing medical scanners, 2WQC (two-way quantum computers)
in theory solving NP problems, also potential astronomical sources and their observation.
Speaker: Dr Jarek Duda is an assistant professor at Jagiellonian University. He holds degrees in computer science (PhD), mathematics (MSc)
and physics (PhD). He is mainly focused on physics foundations, information theory, statistical analysis, and is known for introduction of asymmetric
numeral systems.
It's Pizza night @ Armands - Rockville.
Join us for a members meet and greet pizza night!
We will play a mystery game too. great pizza and other food menu's too.
FREE Parking
I will have a reservation for the group
Members only please
The place is small so you will find the group
RSVP today to get your seat!
Hope to see you there!
Cryptography Events Near You
Connect with your local Cryptography community
NSCoder Night
Bring your work or your hobby, hang out, and code with us.
Follow @buckeyecocoa for more information.
Cocoaheads
Come out to Improving for our monthly iOS and Mac meetings.
This Month's Presentation:
Nothing yet. (You should volunteer).
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/
Prompt vs. Paintbrush
AI is changing how art is made. But when does it stop being your work and start being the machineโs?
This month we're going to be doing a panel with with digital image, music, and written word artists, talking about at what point, while using AI in the creation process, does the work become not the artist creation?
We encourage audience participation during this event that will be moderated by Chris Slee.
Whether youโre deep in the field or just getting curious, come connect with others building and exploring AI in Columbus.
Sponsored by [Transform Labs](https://www.transformlabs.com/services)
Sign up also accessible via [Transform Labs Luma](https://luma.com/55umjqta)
Drunken
This month's prompt concerns the idea of the โwarrior philosopherโ (seemed appropriate in these times)--that is someone whose understanding of violence, power, and justice is forged through direct experience of war. We are looking at Major General Smedley D. Butler, a highly decorated U.S. Marine raised in a Quaker (pacifist) tradition who later became a prominent critic of American militarism (there is a wonderful biography of Gen. Butler called "Gangsters of Capitalism")
Butler's argument in *War Is a Racket* (1935): that many U.S. interventions were driven less by national defense than by corporate and financial interests, with Butler portraying himself as an enforcer for business and Wall Street. We can consider the moral ambiguity of his insider critiqueโwhether complicity strengthens or undermines credibility and also consider some of the concrete reforms he proposed (e.g., โconscriptโ capital before soldiers, restrict the military to coastal defense, and have only those who fight decide on war).
Butlerโs life arc clearly changed from pacifist upbringing to warrior to antiwar crusaderโand asks whether true understanding of peace requires firsthand knowledge of war, and what that implies about the cost of suffering. So do we need to suffer to understand suffering? Do we have to experience war to appreciate peace? As one more question: in the movie "A Few Good Men" Jack Nicholson's character says that "you have the luxury of not knowing what I know" so do most of us go through life oblivious to real violence and suffering? See you at Drunken Philosophy!
Psychic Development Series II - Pueo Group
Private Group. Closed to the Public
Knowing ourselves and understanding our abilities is the first step toward wielding our gifts with control and accuracy.
In subsequent classes we will verify and hone our talents with activities and discussion. These are hands-on workshops and participation is expected.
The goal of our series will be to develop expertise in areas of particular interest such as mediumship, channeling, divination, healing and, etc.. Our ultimate directions will be determined by class members as we evolve.
I look forward to sharing and discovering with you. - Cynthia
COhPy Monthly Meeting
**Improving Office in Franklinton**
Physical location:
Improving Office
330 Rush Alley Suite #150
Columbus, OH 43215
Schedule:
6:00 p.m.: Socialize, eat, and drink. Improving will be providing pizza and beverages.
6:30 to 8:00 pm. Main meeting and presentation(s).
Topic: This month Chris Pazsint will be talking about Agentic Coding. How does one use CLI Based Agents, and Agentic IDEs such as Cursor, Kiro, Antigravity? How to include agentic coding plugins for IDEs you already love such as Visual Studio Code.
We meet on the last Monday of each Month. Presentations are given by members and friends of this group. If you would like to do a presentation (small or large) on a python topic, please contact Central OH Python at centralohpython@gmail.com
Columbus HUG April
Want to be a speaker? submit your talk to our Call for Presenters!!!
https://sessionize.com/cbus-hug-2026/





























