E-Commerce

​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)

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.

Come support Velocity's Monthly Warehouse Sale! We'll need help moving bicycles outside the warehouse before 9 a.m. and back inside at 1 p.m. In between, we'll greet customers, help them find bicycles and parts, and ring up their purchases on Square. Feel free to sign up even if you can't volunteer for the whole time. And remember to wear clothes you don't mind getting dirty with bicycle grease! Please note that volunteers under 18 are required to have a parent or guardian attend the beginning of their first volunteering session in order to sign a waiver for them, and volunteers under 16 are required to have a parent or guardian present with them during all the time they spend volunteering at Velocity.

This is for those who like a somewhat less competitive game. We are at Montgomery College, Rockville. Google maps link for lot 3 https://goo.gl/maps/kKXnNoGakmcdbtaT7 Please take a moment to review the RSVP Guidelines: NO SHOWS: No Shows and Late Cancels prevent other members from playing and create organizing difficulties for the host. If you cannot attend a Meetup, please change your RSVP to No not later than 2 hours before start time. Attendees who are 30 minutes late or RSVP less than 2 hours before start are marked as a No Show and will be contacted by the host/organizer. Meetup event comments do not change your RSVP. If you would like to attend this event you must be a of minimum 2.5 level. USTA guidelines prior for signing up for the Meetup: https://assets.usta.com/assets/1/15/ExperiencedGuidelines_02142011_V2pdf.pdf Singles and doubles game play flexible depending on court availability. If you have any questions, please feel free to drop the group organizers a message. See you on the courts! • What to bring Tennis Balls and Racquet, Water.

https://ridewithgps.com/routes/54518186 18.5 miles. Picnic at Washington Sailing Marina (approx. 11 miles). Bathroom/port-a-potty at beginning middle and end. This ride is a variation on the classic and well-traveled Arlington Loop, starting at Bluemont Park and riding clockwise. We will ride first on the W&OD trail and then make our way to the the Custis and Mount Vernon Trails along the Potomac River and past Reagan National Airport. We'll stop at Gravelly Point to watch a few take offs and landings, then lunch at Washington Sailing Marina. We get on the Four Mile Run Trail (not previously included in E-Bike Lovers rides) and then back to the W&OD trail and the start. We will pass Theodore Roosevelt Island (feel free to park your bike and walk the causeway; no bikes allowed.) There will also be ample DC skyline views. A highlight will be a stop at Gravelly Point, which affords a close-up view of planes landing at National Airport. We lunch at the Washington Sailing Marina, which features a marine convenience store with snacks and soft drinks and pizza. We'll also pass by the Weenie Beanie half smoke/hot dog stand -- an Arlington institution. The meeting place is Bluemont Park. There are multiple parking areas, so do not be fooled. We will meet at the parking area at 325 N Manchester St Arlington, VA 22203. (This is actually the address of the house directly next to the entrance to this parking lot.) Use the pin in the Location Map. Bring plenty of water and snacks or lunch. Don’t forget your bike lock if you plan to stop along the way! The group stops a few times (certainly before tricky turns) for slower riders to catch up. **Please charge your battery, pump your tires, and check your breaks. The ride is on paved trail and asphalt roads, but there are a few hilly segments. As usual, analog bike riders are most welcome.** We highly recommend that you dowbload the Ride With GPS route map. https://ridewithgps.com/routes/54518186 For the E-Bike Lovers group to be successful, we need to grow our membership carefully. Please feel free to invite other E-Bike lovers spread the word, and let’s have fun! **Free Ride With GPS for E-Bike Lovers** The Ride With GPS E-bike Lovers club membership is now free as www.ebikelovers.com generates sufficient income from ads to cover the costs. Here is the link to activate your free membership: [https://ridewithgps.com/auto_approve/Club/6746/Zwa5jhttF5mJrFbN](https://ridewithgps.com/auto_approve/Club/6746/Zwa5jhttF5mJrFbN) **More information about using GPS files:** [https://ebikelovers.com/2021/03/15/download-our-trails-and-never-get-lost/](https://ebikelovers.com/2021/03/15/download-our-trails-and-never-get-lost/) **More information about e-bike ranges:** [https://ebikelovers.com/2020/12/31/e-bike-longer-and-happier-15-smart-strategies-to-reduce-your-e-bike-range-anxiety/](https://ebikelovers.com/2020/12/31/e-bike-longer-and-happier-15-smart-strategies-to-reduce-your-e-bike-range-anxiety/) **DISCLAIMER** LIMITATION OF LIABILITY: TO THE FULLEST EXTENT PERMISSIBLE PURSUANT TO APPLICABLE LAW, NEITHER GREGORY MAASSEN, NATHAN MERRIS, RICHARD CAMER, TRIP COORDINATORS, THEIR AFFILIATES, FAMILY AND FORMER AND CURRENT EMPLOYERS NOR ANY OTHER PARTY INVOLVED IN CREATING, PRODUCING, OR DELIVERING E-BIKE LOVERS GUIDES, OUR MEETUP EVENTS, AND THE GPS E-TRAILS IS LIABLE FOR ANY DIRECT, INCIDENTAL, CONSEQUENTIAL, INDIRECT, EXEMPLARY, OR PUNITIVE DAMAGES ARISING OUT OF A USER’S ACCESS TO, OR USE OF THE E-BIKE LOVERS GUIDES, OUR MEETUP EVENTS, AND THE GPS E-TRAILS. See for full disclaimer: https://ebikelovers.com/disclaimer

[Book Your Classes by Clicking This Link! ](https://crowndancestudio.com/group-classes/) Take a deep dive into the world of Latin rhythm with our **Level 2 Bachata workshop from 1:30 PM to 3:00 PM**. This 90-minute intensive is crafted for dancers who have moved past the basics and are ready to refine their body mechanics, intricate footwork, and partner connection. **For $25,** you’ll receive focused, high-value instruction that bridges the gap between foundational steps and social dance mastery, ensuring you leave the studio feeling confident and inspired

Looking forward to seeing you! Please know that you don't have a reserved spot until you register at [Eventbrite](https://www.eventbrite.com/e/speed-dating-for-autistic-adults-tickets-1982622638683?aff=oddtdtcreator&fbclid=IwY2xjawP1rHJleHRuA2FlbQIxMQBzcnRjBmFwcF9pZBAyMjIwMzkxNzg4MjAwODkyAAEe09Q_4uRXeVchWzuAfDhgFlwnANLaOOKGr1stjbTaw5QD9gQXLos5IOBPUQs_aem_XUyVMTIlkYCPy8pVfz533Q) and purchase your ticket. Limited tickets available. Join us for a supportive, structured Speed Dating event for autistic adults (ages 25 to 40) on Sunday, April 19, 2026, from 2:00 to 4:00pm in Bethesda, MD (address provided after registration). This facilitated event is designed for heterosexual pairings and offers a welcoming, low-pressure environment to meet potential partners. Light refreshments will be provided. Registration is $35 on our website and free for our **[Constellations](https://www.harringtonmatchmaking.com/constellations-membership)** members.

Join our casual open forum where we dive into **any AI-related topic** that interests you! This is a relaxed, participant-driven discussion. Bring whatever’s on your mind — no agenda, no presentations, just good conversation. Topics can range from: * Latest AI tools and breakthroughs * Prompt engineering tricks * AI ethics and societal impact * Fun experiments with Grok, ChatGPT, Claude, Midjourney, etc. * AI in art, coding, business, or everyday life * Wild ideas, future predictions, or “what if” scenarios Everyone is welcome to jump in, ask questions, share experiences, or just listen. Whether you're an AI enthusiast, beginner, or somewhere in between, come hang out and talk about whatever AI topic excites (or confuses) you that day.

Our next club meeting is on Sunday will start at 2:15, please join early. if you're coming in-person, parking is free and usually ample at the Community College on Sundays, and most of us park where the spaces are designated for staff and have never had a problem. 👉 Everyone is welcome to join our meeting, participate and practice. You'll get a chance to hear our club members speak and then have an opportunity to play the table topics game. **Agenda for the Meeting:** 1. Warm Up 2. Prepared Speeches (By club members) 3. Table Topics Game (Learn to think on your feet) 4. Feedback **Online - Join us via Zoom** https://us05web.zoom.us/j/86218205188 If you haven't used Zoom before, watch this short video on how to join our meeting - https://www.youtube.com/watch?time_continue=45&v=vFhAEoCF7jg **In-Person** **\- Join us at Montgomery Community College** Meet us at Science Building, room SC 152. The room is located on the ground floor. The exact building address is https://goo.gl/maps/ZEgQH7bKLvzdqtSQ9 For help, please text or call, 301-917-4202.

To secure your spot, purchase your ticket from the Eventbrite link ([https://www.eventbrite.com/e/speed-dating-21-39-years-olds-tickets-676171897347](https://www.eventbrite.com/e/speed-dating-21-39-years-olds-tickets-676171897347)). RSVPing only on the Meetup page, doesn't allow you to attend the Event. ABOUT THE EVENT Come meet your Soul Mate! We have lots of success stories. Our Speed Dating Event is just like a happy hour. It is structured and with purpose. So, come relaxed, natural and be ready to have fun. As usual we will try to make it a low pressure event. The only huge favor we ask from you, is to be on time. Ticket price includes a COMPLIMENTARY DRINK! Ticket price : $15 (will increase soon) NOTES : 1. We mingle and socialize for the first half hour. 2. We will give each couple 3 minutes seated interaction time. 3. After we finish the rotation, the party continues at the cash bar. 4. Since we paid for the venue, it is non-refundable. However, we will refund fully if the event is cancelled. 5. The payment secures serious and committed people and it is subject to increase. 6. RSVP will be open up until matches between sexes evens up. However, RSVP doesn't guarantee attendance, unless you buy your ticket. We constantly update the RSVPs. 7. If you are not able to attend you can sell your ticket to same sex. 8. For the dating session, we seat one man across from each woman. Then, we rotate each man to the next woman, until each man has met each woman present. Please try to speak loud, since everyone would speak at the same time. 9. After the 3 minutes time is up, you will then secretly circle yes or no on your date card depending on whether or not you would like to get to know the person you just met better. 10. Then, we will do the matching right after the event and will send you the result by email. 11. Address will be sent to ticket holders on the day of the event. Payment Instructions : 1. Login to see the 'Get Tickets' button, after RSVPing. Then hit the button. 2. Verify correct dollar amount for number of people you're paying for. 3. **If you don't have a Paypal account, click "Pay with a Debit or Credit Card".** 4. If you have a Paypal account, simply log in, and pay as you normally would via Paypal. **How to Unblock the Pop-up Blocker on Your Phone** Many of our patrons advised us that they have a Pop-up Blocker on their iPhones and they hinders them from buying tickets. To unblock, please follow the following steps : For Safari Users : 1. Go to Settings 2. Scroll down to Safari and click on it 3. Select Block Pop-ups and turn it off. For Google Chrome Users : 1. Open Google Chrome. 2. Click on the three dots and you will see many options. 3. Click on Settings. 4. Scroll down to content settings. 5. Select Block Pop-ups and turn it off. Refund & Ticket Resell All sales are final. We only refund the full amount, if the event is canceled. If it is rescheduled, we will send an email to ticket holders advising that. A full refund will be given to those that let us know within 2 calendar days of the update email, if you are unable to make it on the new date. No refunds will be given after that time. However, you can sell your ticket to someone else if you are unable to attend. Please, feel free to post in the comment box for the event, that you have a ticket for sale. Work out payment between yourselves, and have the seller only send the organizer a message letting us know the full name of the person taking your spot. You must let us know two hours before the RSVP close time, on the day of the event. **FOR FURTHER INFOR, REFER THE EVENTBRITE LINK. IT RULES.**

Registration and more info available at: [HERB WALK DC REGISTRATION](https://yew360.com/products/so-fresh-so-clean-detox-into-the-new-year-workshop?_pos=3&_psq=HER&_ss=e&_v=1.0)

Use Promo code SPRINGME to receive $5.00 off! Purchase tickets here: [https://www.prosinthecity.com/event/speed-dating-washington-dc-16079](https://www.prosinthecity.com/event/speed-dating-washington-dc-15387) Tonight, Professionals in the City is hosting an event for singles age 35 plus. 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!

PLEASE CHECK THE ONLINE MEDITATION CALENDAR FOR DETAILS OF THESE MORE THAN 50 SERVICES A WEEK- https://onlinemeditation.yogananda.org/calendar/

Have a small business? Ever wish you could just ask some questions around how to grow your business, get more customers or just know what the freak you are doing with sales? Now is your chance!! Every month we are hosting the "Ask an Expert" at the Columbus Metro Library, Main campus. I will be there to answer your Sales related questions. Drop-in for sales coaching designed to help small business owners, entrepreneurs, and sales professionals sharpen their sales approach. Whether you have questions on how to refine your pitch, are looking to close deals more quickly, or are working on building better client relationships, Smashing Your Sales Goals Coaches are here to help. Drop-in to get expert insights, actionable strategies and real-time solutions to grow your business and generate higher profits. Drop-In Sales Coaching is FREE + OPEN to the public. No appointment needed. First come, first served. EPIC Learning created. Accelerate Columbus supported.

How to be a Better Communicator Communication is everything in life You are only as successful as your ability to communicate. \- What if you could confidently talk to anyone? \- What if you had the ability to calmly control every conversation? \- What if you could close that sale\, ask for that date\, make new friends\, repair problematic relationships\, get that raise\, or effortlessly express any idea with confidence? You can! The secret to success relies on your ability or inability to effectively communicate. Attend a free seminar and gain a better ability to communicate. Hosted by the Church of Scientology of Central Ohio 1266 Dublin Road, Columbus, OH 43215 For more information, contact Rhiannon, the Event Host at 614-221-5024

Join other experienced and aspiring agile coaches and professionals to: * develop and practice your coaching skills in a peer-to-peer environment * share current successes and challenges in your work environment and get support from each other * learn from each other, build better relationships and experiment with new ideas ***NOTE:*** Pre-registration is required for this event. **Please arrive 10 minutes early** to check in at the security desk.

Communication is everything in life You are only as successful as your ability to communicate. \- What if you could confidently talk to anyone? \- What if you had the ability to calmly control every conversation? \- What if you could close that sale\, ask for that date\, make new friends\, repair problematic relationships\, get that raise\, or effortlessly express any idea with confidence? You can! The secret to success relies on your ability or inability to effectively communicate. Attend a free seminar and gain a better ability to communicate. Hosted by the Church of Scientology of Central Ohio 1266 Dublin Road, Columbus, OH 43215 For more information, contact Rhiannon, the Event Host at 614-221-5024

Bring your business cards and network in person with other business professionals! Gold Star Referral Clubs is one of the most established professional networking organizations in the country, with multiple groups in central Ohio. Join us!

Whether you've never done improv before, or you've done it for so long you knew Del Close on a personal level, or anywhere in between, come join us! Swing by *Gresso's* for the **Columbus Improv Comedy Meetup** for some fun and games! The idea behind improv is to create entire scenes from scratch based on a suggestion from the audience. This can be done in game form, like *Whose Line Is It Anyway*, *ComedySportz*, or *Wild 'n Out*; it could also be done to tell stories, like *Middleditch and Schwartz*. Our meetup, which is central Ohio's longest running (and free!) weekly comedy event, brings the games (and occasionally different forms) for you to play in a safe, supportive, and compassionate environment. Not only is it a lot of fun, but you get to work on thinking faster on your feet, plus it's an excellent way to meet new people and make friendships that'll last a lifetime! Ask yourself if you want to join the **Columbus Improv Comedy Meetup**, and say "Yes, And" that you'll have fun!

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)