Quantitative Finance

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, we’ll explore the structural forces that have historically led to societal instability—and why Turchin believes we are entering such a period today. Drawing on his work in “cliodynamics” (the quantitative study of history), Turchin examines cycles of rising inequality, elite overproduction, and political fragmentation. We’ll discuss how internal competition among elites and growing public discontent have repeatedly destabilized societies—from ancient Rome to modern America—and 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 today’s increasingly chaotic world. Buy the book on [Amazon](https://a.co/d/097mab73) **Event Notes:** * Discussion Starters: We’ll 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! We’ll 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:** * 🔴🟢🟡 Gallery Place/Chinatown + 2 min walk * Parking: Street & garage parking available nearby

• What we'll do On https://blackecon101.podbean.com/ Thursdays at 6 pm. discussing the economy....

We are the ONLY modern western square dance club in Washington, DC. [DC Lambda Squares](https://dclambdasquares.org/) welcomes singles, couples, of any orientation. We provide an energetic activity that encourages smiles, promotes friendship, and is a ticket to the hip, social world of square dancing. All are welcome to come and dance with us - No Partners Needed. Go to our website to find square dance classes, and a calendar to confirm that we are dancing on the night you want to attend. ***See You on the Dance Floor!*** ### [Check out our event calendar](https://dclambdasquares.org/calender/)

• What we'll do Economist William Michael Cunningham on Podbeam Thursdays at 6 pm. https://www.podbean.com/

Join us every Thursday for Beginner Friendly Social Classes and Social Ballroom Dancing. All is welcome and no partner is necessary. You will learn 2 dances per month in our beginner friendly classes every Thursday. 7:00 Pm Beginner Smooth (Waltz, Tango, or Foxtrot). Please see website schedule for dances of the month. 8:00 Pm Beginner Rhythm (Cha Cha, Rumba, or Swing). Please Check Schedule. 9:00 pm - 10:30 Pm Social dancing. [Register for Classes Here 📌](https://crowndancestudio.com/group-classes/) * Please visit our website in the link above to register and claim your free intro offer for first time visitors. \*You MUST register online to claim the free offer!! Select “Intro offer.” \*The RSVP here does not reflect the size of our classes. We have e at least 15 members each week. And the number is growing.

Please join members of the the Arlington Running Club each Thursday night at 6:30 PM for our weekly Run 'n' Quaff at Astro Beer Hall located at 4001 Campbell Avenue, Arlington Virginia 22206 in the Shirlington neighborhood of Arlington, Virginia. We are a laid back group of runners that enjoys running a 5-K (3.1 mile) course each week followed the quaffing of cold refreshing adult beverages. We have runners of all abilities from the beginning runner / walker up through marathoners and ultra runners. Our age group spans from early twenties through late seventies and all ages in between. There is someone your age range / someone your skill level at our weekly meetups. No check-ins, waiver forms, or administrivia. No rules, just right. Please join us each and every Thursday night, rain or shine, for the Arlington Running Club!

Happy hour at Lulu's Wine Garden. Come and go as your schedule allows.

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.

Come learn how money really works. We’ll cover how to grow it, protect it, get out of debt, and use smart retirement and infinite banking strategies to build long-term security.

Title: Foundations of Localized Symmetry Mathematics Date: April 18 2026 Noon - 14:00 EST Summary: The moment you use Euclid’s 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: Euclid’s definitions are deeply mired in accepting as a “given” 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 — the opposite of Noether’s theorem — 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.

​Join the [Bitcoin District Initiative](https://bitcoindistrictinitiative.org/) (BDI) for a table tennis tournament fundraiser! Proceeds will support BDI's mission to spread Bitcoin education & adoption across the DMV, helping local nonprofits and communities build lasting financial independence. A portion of the funds raised will also be donated to the WDCTT Academy to create a long-term financial reserve (held in Bitcoin) to secure the future of its nonprofit community programs as the value of that reserve grows over time. 🎟️ [REGISTER ON LUMA](https://luma.com/w46mzm6b) ## ​**Event Details** ​Format: Round Robin play with a championship bracket. All skill levels welcome. Capacity: 36 players. Friends & family welcome to watch! Perks: Lunch included. ​Cost: $50 minimum donation. If you'd like to pay with Bitcoin, email trey@bitcoindistrictinitiative.org! 🎟️ [REGISTER ON LUMA](https://luma.com/w46mzm6b) ## ​**Why It Matters** ​Your support fuels BDI's efforts to bring Bitcoin education and adoption to the DMV, empowering local nonprofits and communities to achieve lasting financial independence. A portion of funds raised will also go to [WDCTT Academy](https://wdctt.com/non-profit/), whose nonprofit programs use table tennis to teach life skills, improve brain health, and strengthen community connections across generations. 🎟️ [REGISTER ON LUMA](https://luma.com/w46mzm6b)

[Book Your Classes by Clicking This Link! ](https://crowndancestudio.com/group-classes/) Friday: Advanced Expression End the work week with high-energy **Advanced Rhythm** from **7:00 PM to 8:30 PM**. This session dives deep into the technicalities of Latin and Ballroom styles like Rumba, Samba, or Mambo, designed for dancers who value precision and artistic expression. For $25, you'll receive intensive instruction that pushes your physical boundaries and refines your competitive or performance edge in a high-vibe atmosphere. **When: Every Friday** **Time: 7:00 pm to 8:30 pm.** **1 Dances per month:** **\*Please check the flyer on the group class page for the dance of the month. Or contact us to find out.** **Cost:$25 per person for 90 min.**

**‼️This is a MAFN (Mid-Atlantic Facilitators Network) event. To attend, register at [https://mafn.org/event-6471409](https://mafn.org/event-6471409)** WHEN: Friday\, April 17\, 2026 \| WHERE: Mason Fuse Center \- 3401 Fairfax Drive Arlington\, VA 22201 Don't miss out on this opportunity to Explore \| Sharpen \| Connect We’re bringing the MAFN community together in person this spring - Join us! **What You will Experience** Expect a day filled with fresh ideas, meaningful conversations, and the energy of being in community. Attendees will direct their own agenda around the content themes through interactive workshops and meaningful opportunities to connect and network before and after the conference. **CONTENT Themes:** * Business development in dynamic times * Technology shifts in facilitation * Facilitating amid polarization and conflict **Who Should Attend and Why** If you lead groups, facilitate change, or guide learning, New Frontiers in Facilitation is designed for you. This one-day, in-person conference brings together facilitators, trainers, educators, coaches, mediators, and organizational leaders to explore cutting-edge practices in business development, technology in facilitation, and working across divided contexts. Beyond the sessions, the conference emphasizes intentional networking to help you build meaningful connections that last well beyond the event. Join us and leave inspired, equipped, and connected for the future of facilitation. **SCHEDULE** * Registration & Coffee Networking from 8:30 * Plenary * Rae Ringel - Rupture & Renewal, How Facilitation Evolves in a Polarized AI-Driven World * Six workshops in three parallel sessions (the opportunity to join three in the program) * Bola Audena - Scaling with Purpose: Building a Thriving Facilitation Brand in the Age of AI * Carly Chomer & Kim Fredrich - Make Your Business Development Meaningful Not Mechanical * Christine Gerson & Eboney Dixon-Crump - Clarity, Curiosity and Connection: Coaching Through Polarization & Communicating Across Differences * Jennie Toner-Algin - Find the Beat: Using Musical Techniques to Reduce Polarization and Navigate Group Conflict * Mike Burns - AI and Facilitation: Asking Not What It Can Do, But What It Should Do * Nikki Frias - Building Bridges in Conflict and Uncertainty with Applied Improv * Lunch & Networking * Parallel sessions * Knowledge Cafe: Join table hosts for skills-based learning * Open Space: Join fellow participants to reflect on key learnings, collaboratively explore emerging questions, and engage in self-directed dialogue with peers. * Closing * Happy Hour & Networking from 4:00 **Sponsorships available** Interested in reaching 100+ facilitators and organizational leaders? Contact us today to ask about being the sole presenting sponsor! View Sponsorship Opportunities: [https://mafn.org/resources/Documents/MAFN%20New%20Frontiers%20Sponsorship%20Deck.pdf](https://mafn.org/resources/Documents/MAFN%20New%20Frontiers%20Sponsorship%20Deck.pdf) Email Us: treasurer@mafn.org **Rates** **Members:** Early-Bird (until 11:59 pm on 2/15/26): $99.00 Regular Rate starting 2/16/26: $129.00 Membership Bundle (Member & Registration): $199.00 **Non-Members:** Non-Member Early Bird (until 11:59 pm on 2/15/26): $129.00 **Students:** Current/Active Student: $79.00

We will be playing two games of Concordia with up 5 players each. All experience levels welcome. Expect the game teach to start promptly within the first 10 minutes. Concordia is a strategy game of economic development set in Roman times. Guide a roman dynasty. Send out colonists to settle down in cities producing bricks, food, tools, wine and cloth. Develop your trade network. Appease the ancient fods for their favor. Players choose their actions in Concordia through playing and acquiring new action cards. Find [here](https://www.youtube.com/watch?v=YkKX8RxPN5Q&pp=ygUVaG93IHRvIHBsYXkgY29uY29yZGlh) a how to play video on youtube. Find [here](https://www.riograndegames.com/wp-content/uploads/2013/10/Concordia_rules_eng_1_1.pdf) the rulebook. Note: Please remember to update your RSVP if you can not attend the event. By updating your RSVP when you can't make it other players on the waitlist will have a chance to attend. No-shows may make it harder to attend future meetups. Also, all library rules apply to this meetup event. Mainly that no food is allowed in the library. Covered drinks are allowed.

If you are interested in selecting investment choices for your 401(k) or other workplace savings plan, minimizing your income tax liability, or identifying the most effective investments for your brokerage account, we are the group for you. We are a local chapter of Bogleheads, whose investment strategy can be found here: https://www.bogleheads.org/wiki/Bogleheads%C2%AE_investment_philosophy Or you can peruse the Boglehead forum here: https://www.bogleheads.org/index.php I look forward to seeing you there. Mark Vonder Haar

**Welcome to the Women’s Columbus Bogleheads® Sub-Group** This sub-group is for **women who want to learn and discuss finances in a safe, supportive space**. For those interested in moving towards financial independence and retirement by learning investment basics, choosing your 401(k) investments, minimizing taxes, and more. We’re a local chapter of **Bogleheads®**, following a long-term, practical investment philosophy: [Investment Philosophy](https://www.bogleheads.org/wiki/Bogleheads%C2%AE_investment_philosophy): https://www.bogleheads.org/wiki/Bogleheads%C2%AE_investment_philosophy [Bogleheads Forum](https://www.bogleheads.org/index.php): https://www.bogleheads.org/index.php No question is too small, and no experience is too simple. Share, ask, and learn — at your own pace, without judgment, in a group of like-minded women. Let’s build confidence and knowledge **together**!

## Unlock the Power of Prediction: Polymarket Masterclass Ever felt like you could foresee the future? Now, put those insights to work. Join us for a deep dive into Polymarket, the prediction market platform, and learn how to turn your knowledge of current events into real opportunities. It's more than just guessing; it's about strategic analysis, risk management, and capitalizing on market inefficiencies. ### Is this workshop for you? This session is tailored for: * Those brand new to prediction markets and ready to learn the ropes. * Sharp minds that enjoy analyzing data and making calculated decisions. * Individuals with a passion for news and current affairs, looking to leverage their insights. * Anyone seeking alternative income streams powered by event analysis. ### What's on the agenda? During our time together, we'll cover: * Demystifying Polymarket: From initial setup to executing your first prediction. * Essential risk management techniques to protect your investments. * Decoding market signals and understanding liquidity dynamics. * Tactics for identifying and exploiting market mispricings. * Constructing a robust portfolio for consistent gains. * Inspiring examples of successful Polymarket strategies put in motion. _"The instruction was clear, the advice was practical, and the techniques were actionable. I've already made back my registration fee!"_ - Recent participant ### Secure Your Spot – Full Registration Required! Spaces are limited, so don't miss out. RSVPing "yes" on Meetup **does not** confirm your spot. You **must** complete the official registration using the link below: ### [✅ Claim Your Seat! ✅](https://remoteready.io/product/Polymarket?city=Columbus&groupurlname=circle-of-professionals-mastering-ai-income&startgmtdatetime=2026-04-17T22:00:00Z) Let's transform your knack for predictions into a powerful income stream! Register now.

Start your week the right way with Manic Mondays. Giving you an enjoyable Bachata lesson with a push of cool moves. The second hour has Beginner/Intermediate Salsa on 1. You must understand basic Salsa skills to participate. 730pm-830pm Bachata Cool Moves 830pm-930pm Salsa On 1 (Beginner/Intermediate) $15 for One Class $20 for Both Free Parking & Plenty of Dance Space.

AI is changing how art is made. But when does it stop being your work and start being the machine’s? 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 you’re 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)

Dinner and dancing

**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