Graph Theory

**BitDevs Bitcoin Socratic Seminar Berlin @ c-base Raumstation** Join us for our monthly interactive **[Bitcoin Socratic Seminar](https://bitdevs.berlin)** in Berlin! We’ll start with pizza and beer (sponsored by [Ordimint.com](https://ordimint.com)), followed by deep-dive discussions on the most interesting *technical* developments in Bitcoin from the past month. Participation by everyone is highly encouraged! Our goal is to foster lively discussion, knowledge sharing, and debate. In the weeks leading up to the event, participants gather topics such as: * New research papers * New BIPs and BOLTs * Network statistics * Technical blog posts * Mailing list and Delving Bitcoin threads * Pull requests and updates from key repos (Bitcoin Core, LND, Core Lightning, Eclair, BDK, rust-bitcoin, LDK, Electrum, …) Each topic is briefly introduced by our moderators and then discussed before moving on. The full list of links will be published at [bitdevs.berlin](https://bitdevs.berlin) 1–2 days before the event — please review them in advance to get the most out of the discussion. **Important details:** * This event is highly technical — best suited for those with a solid grasp of Bitcoin internals. Curious newcomers are always very welcome, but expect in-depth conversations (see the former topics at [bitdevs.berlin](https://bitdevs.berlin)). * Chatham House Rule applies: you may share what was discussed, but not who said it. No livestream, no photos, no recordings. * The evening begins with food and networking; people often stay after the seminar to keep talking. **Co-hosted by:** * [Felix](https://x.com/FelixWeis) * [Freerk](https://x.com/freerko) * [Fabian](https://x.com/fjahr) For background on the idea of BitDevs Socratic Seminars, see [this article](https://bitcoinmagazine.com/articles/op-ed-want-to-learn-about-bitcoin-try-a-local-socratic-seminar).

THERAPEUTISCH ❤︎ Asana Basics THERAPEUTISCHES YOGA mit monatlichen Fokus: JANUAR ❤︎ Asana Basics FEBRUAR ❤︎ unteren Rücken MÄRZ ❤︎ Schulter, Nacken, oberer Rücken APRIL ❤︎ Schulter + Asana Basics MAI ❤︎ unteren Rücken ... REFERENZEN 'Ich wollte Dir/ Euch auch nochmal für die tollen Stunden danken! Ich habe Skoliose und ein Myofasziales Schmerzsyndrom in der linken Schulter und kann mir (seitdem ich bei euch Yoga praktiziere) den Gang zum Physiotherapeuten sparen! Das hat seit einigen Monaten wirklich mein Leben verändert und dadurch habe ich auch weniger Schmerzen/ Stressrelease - danke dafür! <3 Liebe Grüße, Sophia'

Hola chicos, Moin zusammen, lasst uns Deutsch und Spanisch sprechen und ein paar Bier zusammen trinken, die Idee ist einfach und gut :) Bitte bringt zumindest basis Deutsch oder Spanisch Kenntnisse mit! Vamos a hablar español y alemán y tomar unas cervezas, la idea es simple y buena jaja. ¡Por favor, ven por lo menos con un nivel básico de español o alemán! Danke, gracias!

Dieser besondere Deutschkurs ist für alle, die mit Spiel und Spaß ihr Deutsch verbessern wollen. Wir sind eine kleine Gruppe (max. 15 Personen) von Deutschlernern zwischen A2 - B2 und machen Theater-Improvisation auf Deutsch. Aber keine Angst - das kann jede/jeder lernen! Der Fokus liegt vorallem auf Sprechen und Verstehen, so daß du in Alltagssituationen spontaner reagieren kannst und mit dem Sprechen auf Deutsch flüssiger wirst. Ich bin sowohl Deutschdozentin als auch Theaterschauspielerin und entwickle diese Methode seit mehr als 10 Jahren. Der Kurs ist immer mittwochs und du bist herzlich willkommen, vorbeizukommen und uns kennenzulernen. Das 1. Mal kostet der Kurs 12 Euro zum Kennenlernen. Ein 10er Ticket kostet 160 Euro. Ein 5er Ticket 95 Euro und der Drop-in-Preis ist 20 Euro. Ich freue mich auf Euch. Bei Fragen kannst du mich gerne kontaktieren. liebe Grüße Nina

**Berlin can be a tough nut to crack.** Sometimes you have your "one person" and you’re stuck in a bubble; other times, you’re the new kid on the block looking for your crew. This night is designed to break those bubbles and bridge the gap. "Bringing a friend? **Amazing.** Coming solo? **Also great.** \> Whether you’re rolling with your crew or flying solo\, you’re in the right place\. Our mission is to help you meet like-minded people and turn 'strangers' into 'Berlin besties.' **Friendly reminder**. Change ur attendance status if you cannot attend!

**Discover the joys of singing in a nurturing and supportive atmosphere at our new regular Wednesday singing class at b23 Space in Prenzlauer Berg. Guided by soprano and singing teacher Sarah McInerney, this class invites you to delve into the emotional and somatic aspects of your voice, fostering a sense of community and connection through the power of singing.** Our 75-minute sessions offer a blend of breathing exercises, visualizations, and improvisational activities designed to help you explore your voice in a relaxed, playful, and inclusive setting. The focus is on experiencing the sensations and emotions of singing rather than perfecting technique or striving for performance excellence. Join us on this vocal journey and experience the transformative power of singing, one note at a time. Open to anyone and any body. No previous voice training required! **Please book your spot before via:** [Eventbrite](https://www.eventbrite.de/e/the-voice-lab-experiments-with-singing-tickets-747110847657), [Urban Sports Club](https://urbansportsclub.com/de/venues/b23-space-1?date=2025-07-17&service_type=1) or [EGYM Wellpass](https://egym-wellpass.com/int/gym-finder?n=b23+space). If you're feeling spontaneous, you can usually also drop-in and pay cash or via PayPal. Can't affort a regular ticket at the moment? Send a quick message to [hi@b23.space](hi@b23.space) and we'll find a solution.

**Quizfans aufgepasst! Wir besuchen gemeinsam die Quiz Night bei Cafe Lutetia am 13.05. um 18:30. Das Quiz selbst beginnt vorraussichtlich erst um 19:00, das gibt uns eine halbe Stunde zum Ankommen, und uns in Teams aufzuteilen. Für unser Meetup sind zwei Teams mit jeweils maximal 6 Personen reserviert. Damit wir also nicht den Rahmen sprengen, oder einen Tisch umsonst belegen, ist es sehr wichtig, dass ihr euch vorab anmeldet (und ggf. wieder abmeldet, wenn ihr doch nicht könnt). Es wird 4 Fragerunden geben und das Quiz geht bis 22:30/23:00. Und egal, wie wir insgesamt abschneiden, für das Meetup Team mit den meisten richtigen Fragen gibt es einen Preis ;)** Mehr Infos findet ihr hier: [https://altstadt-spandau.de/events/lutetia-quiz-night/ ](https://altstadt-spandau.de/events/lutetia-quiz-night/) Wenn du neu in der Gruppe bist, lies dir bitte unsere Haupt-Gruppenseite durch. Danke! Wir möchten eine Gemeinschaft gründen, in der Menschen sich treffen, austauschen und gemeinsam neue Erfahrungen machen. Unser Ziel ist es, eine offene und fröhliche Atmosphäre zu schaffen, in der neue Bekanntschaften entstehen und interessante Gespräche geführt werden können. Bist du neu in Spandau und hast noch nicht richtig Anschluss gefunden? Lebst du schon länger in Spandau und möchtest nicht immer nach Mitte fahren, um Neues zu erleben? Wenn du Lust hast, Teil dieser Gemeinschaft zu werden und gemeinsam schöne Momente zu erleben, bist du herzlich eingeladen, dich uns anzuschließen! Wir freuen uns auf dich! :) \-\-\- **EN** \-\-\- **Sorry guys, this quiz will be in German only. Feel free to check out our other events, which are all English-Speaker friendly :)** If you are new in this group, please read our main group page. Thank you! We want to create a community where people can meet, exchange ideas and share new experiences. Our aim is to create an open and friendly atmosphere where you can find new friends and have interesting conversations. Are you new to Spandau and haven't really found your place yet? Have you been living in Spandau for a while and don't always want to travel to Mitte to experience something new? If you would like to become part of this community and experience some great moments together, you are welcome to join us! We are happy to see you soon! :)

**Neue Leute kennenlernen, nette Gespräche & frische Luft. Am Sonntagnachmittag.** . **💶 2 Euro Gebühr (vor Ort, in bar)** . **🛑 Falls Du es nicht schaffst, sag bitte rechtzeitig ab.** 😊 **Zusagen sind bis kurz vor Beginn möglich. Ich freu mich Dich zu sehen.** . 👋🏼 Wir treffen uns an der [S-Bahn Station Treptower Park, am Hinterausgang Richtung Park (Link Google Maps)](https://maps.app.goo.gl/4kVsM838mCSftVPc9). . Wir machen eine kleine Vorstellungsrunde. Danach gehen wir los. . 💐 Wir laufen auf dem großen Uferweg entlang der Spree, vorbei am Vergnügungspark Plänterwald bi szum Ende des Plänterwalds. Dort kehren wir um, gehen zurück durch den Plänterwald um dann wieder das wunderschöne Spree-Ufer entlang zu laufen. 😊 Ich bereite Deep-Talk-Fragen vor, damit Ihr gut uns Gespräch kommt. . **💧 Empfehlungen:** * Bring etwas Wasser mit, falls Du durstig wirst (1 Liter) * Gegen Abend kann es kühler werden: Bring Dir etwas Warmes anzuziehen mit. . **👉 Rechtlicher Hinweis** Auch wenn wir uns als Gruppe treffen und ich einen schönen Weg für uns herausgesucht habe, **bist Du voll verantwortlich für Dich selbst**. . **👱🏼‍♂️ Mehr über Abenteuer Freundschaft** Ich bin Georg Preller. Ich habe Abenteuer Freundschaft gegründet, um Freundschaft zu erforschen. Mein Ziel: Mehr echte Freundschaften auf dieser Welt. . Auf Meetup findest Du zahlreiche Events zum Kennenerlenen oder um über Freundschaft zu lernen. . **👋🏽 Weitere Gruppen & Kontaktmöglichkeiten** . **✈ Telegram-Kanal: [t.me/abenteuer_freundschaft](http://t.me/abenteuer_freundschaft)** für Events, Workshops & Treffpunkte für neue Freundschaften . **✉ Freundschafts-Newsletter:** [https://abenteuer-freundschaft.de/newsletter](https://abenteuer-freundschaft.de/newsletter) Alle 4 Wochen das Neuste aus der Freundschaftsforschung; oft seltener, denn ich schreibe nur dann, wenn es wirklich etwas zu berichten gibt. . **🔥 6 Zutaten großartiger Freundschaften** Seit 2020 forsche ich, was großartige Freundschaften wirklich ausmacht. Das Ergebnis ist das 30seitige eBook: "Die 6 Zutaten großartiger Freundschaften". Du erhältst das eBook zurzeit kostenlos mit der Anmeldung zum Newsletter: [https://abenteuer-freundschaft.de/newsletter](https://abenteuer-freundschaft.de/newsletter) **💯 Wie wird man Freunde in Berlin:** * [Freunde finden: Wie wird man Freunde?](https://abenteuer-freundschaft.de/freunde-finden) * [Was ist Freundschaft?](https://abenteuer-freundschaft.de/freunde-finden) * [Wie schnell wir man Freunde?](https://abenteuer-freundschaft.de/wie-schnell-entsteht-freundschaft)

Finding Community: Pathways Out of Loneliness ##### May 14 2026 - July 23 2026 with ***Marco Obermüller*** **6 x Thursday** on 14/05, 11/06, 25/06, 09/07, 23/07, and 30/07 free event with[ ](https://wearevillage.org/en/shop/einsamkeitserien2/w20-2026/)**[Registration](https://wearevillage.org/en/shop/einsamkeitserien2/w20-2026/)** English for **LGBTQIA**+ In our group work, spaces emerge in which belonging and exchange can be experienced directly. Personal topics are explored together and experiences are shared, making new ways out of isolation tangible. Facilitated exercises, shifts of perspective, and shared reflection foster connectedness, strengthen social effectiveness, and create strategies for sustainable relationships that extend beyond individual sessions. Loneliness can arise when people have few opportunities to experience genuine connection with others. This is where the group comes in, creating spaces in which a sense of belonging can be actively experienced. By working together on personal topics, a social space of resonance emerges that replaces isolation with relationship and contact. Through the structured sharing of experiences, loneliness becomes visible, discussable, and therefore open to change. Through facilitated interaction, shifts in perspective, small experiments in experiencing contact, and shared reflection, participants develop new forms of connectedness and strategies for social effectiveness. The group functions not only as a source of support, but also as a learning environment for shaping relationships. In this way, resilient connections are formed that extend beyond the individual meeting and help to sustainably reduce loneliness. **Belonging versus loneliness: everybody can feel lonely sometimes** As human beings we have a natural longing for social connection and support by others. Due to individual and structural discrimination queer people have an ever higher risk to suffer from chronic loneliness. In cooperation with the **Landesstelle für Gleichbehandlung** – (Berlin State Office for the Equality of Treatment – against Discrimination) **we are village \| queer matters** has set itself the goal to offer some programming on the issue of loneliness in the queer community. We have also created a **[survey](https://forms.gle/BZkLsma3sRX2vdRb8)** to find out more about your experiences of loneliness. With your help, we can create a better program that meets your needs and with which we can create more togetherness! **This group consists of a maximum of 15 participants with registration.** **Language**: This series will be held in English. This series is open to everyone. Your English should be fluent enough to follow an event in English. **Cost**: free event with registration **Important**: you must commit to all 6 sessions. **Dates**: 14/05, 11/06, 25/06, 09/07, 23/07, and 30/07.

Take this course to gain a solid foundation in the art of analog photography ! **WHAT WE DO** **FILM DEVELOPMENT** In this part you will learn how to mix and use chemicals to develop film. You will learn about different development techniques, such as push processing and how they can affect the final appearance of your images. **PRINTING** Once you have developed your film, it is time to print and enlarge your images! You will learn how to use an enlarger to make prints and how to use different types of paper to achieve different effects. You will also learn how to dodge and burn images to adjust exposure and contrast. **WHAT IS INCLUDED IN YOUR FEE** In the workshop is included all the material, paper, chemistry and passepartout **Come with your roll of film already shot** Time: 6+ hours Fee: 140,- € (incl. material) **WHERE WE DO IT** The course will take place in **StattLab**'s new darkroom in Berlin, right in the center of **Mitte**, just a stone's throw from the wall ! **HOW TO RESERV YOUR SPOT** You can book your spot directly from my website: [sandromosco.com/workshop-booking](https://www.sandromosco.com/workshop-booking) You can **contact me** at: [studio@sandromosco.com](http://mailto:studio@sandromosco.com/) or via social media [@sandromosco](https://www.instagram.com/sandromosco)

Meet, Match, MoveOn and Manage or Master Why Meet 1)Meet new People Culture Languages. 2)Not Match Romance, Political Views nor Religion, only Respect and Joy 3) Moveon, advance with your level, goals, and especially share and try Rotate the groups and let others participate a bit. 4) Master the challenges, and Manage to give a Like or appreciate the meetups!! **Thematic** or small Concept: Manage to Bring 2 German Friends and you get a Drink. if you bring your Ex Partner + 2 German friends =2 drinks = thats the Challenge and the Attitude of 2026

**Berlin’s Only Comedy Show That Fixes Your Problems (Kind Of)!** Stand-up comedy meets hilarious, unqualified life advice! Comedians tackle your anonymously submitted problems live on stage—roasting, dissecting, and turning them into comedy gold. **Where?** The hidden Mitte gem —**Art.City.People** in **Heckmann-Höfe!** **When?** Doors: **8:00 PM** \| Show: **8:30 PM** Come for the stand-up, stay for the therapy—just bring your problems (or a friend with worse ones). Every show is a fresh mix of **four experienced comedians and new audience problems**—so you never know what to expect! Hosted by **Lena Stolby** — she’s Russian, so she *really* knows about problems! **&** We are a free entry pay-what-you-want show, and **have been running solely thanks to the support of the audience**, so to help us keep making this world a drama free place we **suggest a contribution of €12-15!** **Seats are limited, so book now!** The room gets very busy, so, to make sure you get a seat please book a seat via Eventbrite here (it’s free): https://www.eventbrite.com/cc/comedy-therapy-events-1626059

Welcome to our cosy Godot Engine Community Meetup A Maze Edition! This is not a structured meeting, but rather a friendly get-together. We will hang out, chat and maybe show some of our current projects! 🦜 This is an open event and we will hang out at c-base afterwards, so it is fine to come late. Regardless if you are an artist, designer, programmer, beginner, hobbyist, professional or anything in between: join us for sharing knowledge, creating art together, coding together, joining game jams together and having fun! 🌼 This meetup will happen at [c-base](https://c-base.org), Rungestraße 20, 10179 Berlin. 🛰️ You can also join us on [our Discord Server](https://discord.gg/Sm3CgrqqQa). ☎️ Follow us on [Mastodon](https://mastodon.gamedev.place/@GodotUserGroupBerlin) for updates. 📢 Also check out [our website](https://godot.berlin). 🌐 Please be [excellent to each other](https://godotengine.org/code-of-conduct/)! 🕊️

After a lovely first Poetry in the Park gathering in Bürgerpark Pankow, we’re bringing the idea into a second round — this time with a photographic twist. Join us for a spring afternoon around Schloss Charlottenburg where photography and poetry meet. Bring a poem you love — or one you wrote — and we’ll begin by reading a few poems together. Then we’ll set out for a gentle 30 minute photo walk through the park, capturing details that catch our attention: blossoms, reflections, statues, hidden corners, fleeting scenes. Using the images we gather as inspiration, we’ll meet again on picnic blankets to write short poems from guided prompts and share them in an informal circle. No photography skills needed. No poetry experience required. Just curiosity, observation, and a bit of spring magic. Bring: * A poem to share (optional) * A journal + pen * Your phone or camera * A picnic blanket Duration: approx. 2 hours. This meetup is donation based. Your contribution helps keep this community alive and is highly appreciated. You can either contribute in cash or via Buy me a Coffee: [https://buymeacoffee.com/butterflyradar](https://buymeacoffee.com/butterflyradar) Questions? Check our Meetup-FAQs: [https://socialbutterfly.berlin/meetup-faq/](https://socialbutterfly.berlin/meetup-faq/) Meet your host I’m Julia — a Berlin local who loves bringing people together. My path went from growing up in a dance school to studying philosophy to working in IT support, and somehow all of that led me here: hosting meetups and creating spaces where people can show up, relax, and connect. Insta [https://www.instagram.com/juwaberlin/](https://www.instagram.com/juwaberlin/) LinkedIn [https://www.linkedin.com/in/julia-waehnert/](https://www.linkedin.com/in/julia-waehnert/) About The Social Butterfly Club 🦋 is a Berlin-based community that has been bringing people together for over three years. Each gathering is part of a larger framework designed to help friendships grow through shared experiences in the city — with a long-term vision of turning Berlin itself into a shared, playful experience. Love the vibe? There’s a whole community waiting for you. 🦋 Join the Social Butterfly Club and experience Berlin together: [https://socialbutterflyradar.substack.com/](https://socialbutterflyradar.substack.com/)

**Total Eclipse of the Chart: School Redistricting Dashboards** In this presentation, we will explore the utilization of maps, sets, and SQL within a Tableau dashboard to help provide “what-if” analyses generated through the use of a mapped dashboard, providing different scenarios and the potential implications of these. While in this use case we are focused on a large school district, the concepts of utilizing existing data to explore the future impacts of modifying different geographic boundaries can be useful to many industries, balancing the mix of maps with visual analytics. **About Our Speaker** Robert Kramer is the Data Systems and State Reporting Coordinator at South Western City Schools in Grove City. He has worked there for 17 years, serving previously in the roles of Data Analyst, Programmer, and Operations Coordinator. Prior to working at South Western, he worked as a Systems Engineer at Pinnacle Data Systems in Groveport. He graduated in 2005 from The University of Toledo with his Bachelor’s in Computer Science and Engineering, and a minor in Mathematics. Robert resides in Obetz with his wife, and their 15 and 12 year-old daughters. He was also just elected to his 3rd four-year term on the Obetz City Council. Thanks to our 2026 sponsors: [Clarivoy](https://www.clarivoy.com), [What Box Consulting Group](https://www.whatboxconsultinggroup.com), [Conductrics](https://www.conductrics.com), and [Piwik PRO](https://piwik.pro) More info at [cbusdaw.com](https://cbusdaw.com)

Join us as we get together to see the top-reviewed comedy-drama, I LOVE BOOSTERS! The film comes from writer/director Boots Riley and follows a group of shoplifters who take aim at a cutthroat fashion maven. Here are details, trailers and our plan for this event: DESCRIPTION: The film follows a group of shoplifters who take aim at a cutthroat fashion maven. It is written/directed by Boots Riley (Sorry to Bother You) and stars Keke Palmer, Naomi Ackie, Taylour Paige, Poppy Liu, Eiza González, LaKeith Stanfield, Will Poulter, Don Cheadle, and Demi Moore. BUZZ AND ACCLAIM: I Love Boosters was the opening film at this year’s SXSW Festival and premiered to rave reviews! It is currently earning a tremendous 97% positive rating on Rotten Tomatoes where critics call it, “an unexpected celebration of friendship, community, and solidarity.” Others call the film “an exercise in radical empathy,” a “masterful” and “optimistic” film designed to “provoke discussion” while making the audience laugh. TRAILER: [https://www.youtube.com/watch?v=r4lPRISgr9c](https://www.youtube.com/watch?v=r4lPRISgr9c) SUMMER OF ICE CREAM: GRAETER’S! Established way back in 1870 in Cincinnati, this historic, family-owned brand is famous for their delicious small batch ice cream and any chocolate chunk flavors! They are currently the only commercial ice cream maker using the French Pot method that they’ve been using since they first opened! Plus, those chocolate chunks, oh my goodness! Vegan options are available. PLAN: We’ll plan for a 7pm-ish showing and will meet in the lobby area about 20 minutes before the show. Advance ticket purchase not required for this theater but Showtime and complete details will be confirmed/announced as the date gets closer. Look forward to seeing you there, Dan

Join us as we get together to get together to help those in need at this CMG Gives Back event! We have a great little community of Movie Group friends so rather than see a movie this time, we’ll help “create a better world” by helping serve those in need. Here are complete details and our plan for this event: FAITH MISSION – GRANT KITCHEN: The Faith Mission kitchen and dining room serves residents 3 meals a day, every day of the year. For this event, our group will help prepare food, serve meals, assist residents in the dining room, wash dishes, and clean surfaces. PLAN: We will be preparing / serving / cleaning for BRUNCH from 10:30am to 12:30pm and have space for a total of 7 volunteers. Please arrive at 10:20am and wear closed-toe shoes and long pants. LOCATION: Faith Mission – Grant Kitchen is located at 245 N. Grant Ave. Enter the kitchen at Dock 1 (in the back of the building), indicated in the attached map. On-site parking in the adjacent lot and street parking is available in the surrounding area. Below are some links / attachments with additional info/details: IMPORTANT REMINDER: Our group will be providing all of the volunteers on this day so a firm RSVP count is essential. Please only sign up if you are certain you’ll be able to attend. If something unavoidable comes up, please try to update your RSVP no later than one week prior to the event. With few exceptions, no shows or cancelations within 1 week of the event will not be eligible for future CMG Gives Back events. I appreciate your understanding as we try to ensure the agencies have the volunteers needed to provide the essential services they provide to the vulnerable population they serve. Our Partner Agency for this event is Lutheran Social Services! A huge THANK YOU to all of YOU for volunteering at this (and any of our previous) CMG Gives Back events! Should be another good/fun/meaningful time together, Dan

Join us this Thursday (5/14) at 6:30 pm at Rocky Fork Metro Park in Westerville as we walk about 2.5 miles of a fully paved trail. The Beech Woodland trail is a flat yet scenic trail with a variety of landscapes. Let’s take it in together!

We connect you with up to 30 Men or Women tennis partners close to your PLAYING REGION and skill level. This program is less competitive, no champions crowned, no league standings just dedicated tennis partners who want to meet up with you on the courts. Players will meet up to play a tennis match or just to hit around. Just go through the [Join Page](https://www.tenniscolumbus.com/partner-program) to enter this program. [https://www.tenniscolumbus.com/partner-program](https://www.tenniscolumbus.com/partner-program)

Who else is ready to sit outside? Join us for a casual chat over coffee & tea at Grandview Grind! Come out and meet some new people, enjoy your favorite drink, and make some new friends!