Cryptography

Kom til JCafe og diskuter om IT udvikling har fået AI som fast deltager for alle pladser og opgaver. Agenda * AI first /v Martin Boel * Claude og PF4J - et plugin framework til Java v/Anders Kristian Andersen

**RUN THE CITY. MEET THE WORLD.** We launched something new - and what a success it was! With up to 40 people we run beautiful routes through Copenhagen on our social runs - and you're invited to be part of the next edition. In the future, we will post and track our runs on CYKOM (platform/app), as we thereby have the opportunity to get connected with brands to elevate our runs and maybe provide us with some drinks or similar occasionally. To establish this well it would be great if you can take a minute and join our running community there and also join the next run via the following link: https://app.cykom.com/LJUg/o7izxl02 **DEAR WORLD RUNS** is for those who want to move, connect, and feel the city in motion. Whether you're a regular runner or just curious to join, this is your moment. 🏃‍♂️ **The Run** • Friendly but fun pace around 6:15 min/km to be able to chat but with ambition • Approx. 5–6 km, accessible for most • You don’t need to be “fast” - just bring energy ☕ **The Vibe** • Post-run coffee/tea included & hangout at Nomad Day Bar in the 25hours hotel on beautiful Paper Island • Come solo or bring a friend - we’ll make it social • Led by the Dear World crew you can leave your belongings that you don’t want to take along the run with the venue which will secure it while we are gone. 📍**Where & When** Nomad Day Bar / 25hours Hotel Paper Island 🗓️ Tuesday every 2 weeks 🕙 18:00H sharp (meet from 17:45) **We run the city - join us.** Let’s make this the start of something that moves us all. #DWRuns #DearWorldCPH

**❗ Complete your event RSVP here:** [https://gdg.community.dev/events/details/google-gdg-copenhagen-presents-google-io-extended-2026-watch-party-framna-copenhagen/](https://gdg.community.dev/events/details/google-gdg-copenhagen-presents-google-io-extended-2026-watch-party-framna-copenhagen/) Join Framna for their annual Google I/O Livestream Event on May 19. Framna are opening their doors at their office in Islands Brygge for an exciting evening of technology, talks, and tasty treats! Schedule: 17:00 - Doors Open 17:30 - Enjoy snacks and refreshments 19:00 - Google I/O Livestream begins 21:00 - Event concludes This is a fantastic opportunity for tech enthusiasts, industry professionals, and anyone interested in the latest developments in technology to come together and experience the magic of Google I/O. Whether you’re a developer, a student, or just curious about the future of tech, you’re welcome to join us. The event is open to all and free to attend. Come network, learn, and be inspired. We look forward to seeing you there! Agenda 5:00 PM: Doors Open 5:30 PM: Enjoy snacks and refreshments 7:00 PM: Google I/O Livestream begins 9:00 PM: Event concludes *** Partner Framna Denmark (https://framna.com/) Framna is a diverse and global team of builders, thinkers, and creators. We are united by one mission: to craft digital products that make everyday life better for millions of people worldwide. Today, over 500 of us collaborate across eight studios in Denmark, the Netherlands, Sweden, Switzerland, and the US. We partner with industry leaders (and those about to be) to create digital products that define markets, reshape industries, and drive meaningful growth. We call it Win by product. ***

**Guests: Registration on email is required before attendance** Guests are most welcome to join our meetings, but attendance must be registered by email to [copenhagen@toastmasters.dk.](http://copenhagen@toastmasters.dk.%2A%2A/) Please come 10 minutes before the meeting start. We start at exactly 18:00. Welcome to ***Copenhagen Toastmasters Club*** Looking to improve your speaking and communication skills? Ignite your career? Gain the confidence to speak up? You’ve come to the right place. **Our meetings for 2026 from April to June:** • Wk 15: 7. april • Wk 17: 21. april • Wk 19: 5. may • Wk 21: 19. may • Wk 23 2. jun. • Wk 25 16. jun. **Our history** The *Copenhagen Toastmasters Club* was established in June 1996 by a group of dedicated people. We are the first Toastmasters club in Denmark. We are part of the Toastmasters International which is a nonprofit organisation that helps people to improve public speaking. **Our goals** *Copenhagen Toastmasters Club* will give you the skills and confidence you need to express yourself effectively in any situation. Toastmasters is the most efficient, enjoyable and affordable way of gaining great communication skills. You'll learn how to: * Formulate and express your ideas effectively * Be more persuasive and confident when giving presentations * Improve your one-on-one dealings with others At *Copenhagen Toastmasters Club*, you'll get to practice your skills by organising and conducting meetings and motivating others to help you. Become a better negotiator. Gain trust. Inspire your team. **Want to know more about *Copenhagen Toastmasters Club*?** [Facebook](https://www.facebook.com/CopenhagenToastmasters) , [LinkedIn](https://www.linkedin.com/company/2480522/admin/dashboard/) [Toastmasters International - global network](https://www.toastmasters.org/)

Fulfillment. Joy. – Do you know what it is? Do you feel it now? Many of us are living lives that have “just sort of happened”. We had a dream, a vision (maybe we still do) for what we wanted our lives to look like. Somewhere along the way, life took over and something else ended up happening. We made decisions, took a turn down a path, and now our life isn’t what we thought it would be. Or we’re living someone else’s life. Maybe it’s what our parent’s wanted for us. What we believe our partner or a potential partner might want. Or maybe it’s what we believe we need to do and have to be happy. I was one of these people. My life checked all the boxes for what I thought I needed in order to be happy. And still, I wasn’t. Join me for a coffee talk on what it means to live a Life By Design. Where your choices are deliberate and based on your authentic, true self. What you have to let go off to achieve this (hint: the notion that vulnerability is a weakness and feelings of fear and guilt) and who you will become in the process.

We are a group of people meeting on Tuesdays to socialize around cooking and eating together. Usually around 40-50 people. Many are international students, but also other people join. The foodclub exist independent of Meetup, we invite you because we have room for a few more people. The food is vegan and made from donated leftover veggies from a local greengrocery. The place has originally hosted leftwing activist groups, and many of the people joining are also involved in political groups. If you want to join for chopping and cooking, we will be doing that from 3 to 6 pm. It is possible to join part of the time. From 6:30 to 8pm we are serving food. Donation around 30 kroner. If you are helping out some hours, chopping, cooking or cleaning, you can eat for free. From 8 to 9 - 9:30 pm we are cleaning up the place. We hope to see you in our lovely foodclub <3

**🏛️ WHAT'S PRACTICAL PHILOSOPHY ABOUT?** Practical Philosophy is a weekly meet-up that brings critical thinkers together for an opportunity to dive deep on a topic, practice communicating, and building a community. All with no ‘official’ philosophy knowledge required! 😎 Practical Philosophy is based on the idea that philosophy should be accessible to all, and not something reserved only for academics. Each week we choose a topic, and the goal is to use the conversation to develop our critical thinking and communication as we explore that topic. The goal is to help develop our Critical Thinking, Communication, and Community 🙌 **📓 HOW DOES IT WORK?** Each week, we pick one topic and discuss it. The topic for the week is shared, generally in the [Whatsapp group](https://chat.whatsapp.com/CRqdyO6p6lZDIN2qVRIlWX), along with jump-off points to get the conversation going. When groups get bigger than 7-8 people, it’s important that we break into smaller groups. This way we are able to maintain a conversational flow as opposed to having our meetups feel like a discourse or lecture. **General Meeting Agenda** Each Practical Philosophy meet-up follows this general timeline: * 19:00-19:15 - People arrive and chat, get to know each other before the ‘official' start. * 19:15-19:25 - Meeting introduction, explanation of Practical Philosophy and the topic for the week, read the guidelines and the overview so attendees know what to expect in terms of timelines. * 19:25-20:45 - Break into small groups - introduce yourselves and general thoughts on the topic, open discussion afterwards. At this point the group can review the ‘jump-off’ questions as needed, but they are just there to help guide the conversation. It’s not obligatory to answer them. * 20:45-21:00 - Bring everyone back together to discuss conclusions of the topic - each group gives a short 1-minute summary. Organizer concludes the meeting and everyone takes a group photo. * 21:00 - The official meeting is over but it’s a great opportunity to get to know people in a non-structured environment, so we often stick around, chat, and get to know each other. **🧧PRICING?** Practical Philosophy Club is FREE to attend! We just ask that if we are meeting in a café, buy a beverage! Some chapters rent a space for us to meet, and they may ask for donations to help contribute to the cost of rent. Donations will always be 100% voluntary though! **💛 WHAT PEOPLE SAY ABOUT PRACTICAL PHILOSOPHY** 🗣 “I feel like Philosophy Club helps someone build their own belief system through a series of perspectives while not promoting what’s right and wrong” - Ekam 🗣 “I got hooked from day 1 (the topic was authority) and felt it was the right place for me. I feel it is a place where people can go to learn and discuss new perspectives and increase critical thinking and community by interacting with people who might challenge your point of views but at the same time encourage you to have openness and mind flexibility.” - Daniel **🤓 FAQ** * ​What will we talk about? What's the topic? ​The topic for the week is shared every Sunday in the Whatsapp group. We try to add the topic to the comment section on this event page as well but if you don’t see it, the topic and the jump-off points will be in our [Whatsapp](https://chat.whatsapp.com/CRqdyO6p6lZDIN2qVRIlWX). * Do I need to study or read anything to attend? No preparation is necessary. This isn’t a study of other thinkers. We want to know what YOU think about the topic, not what an old philosopher thought. If you have a perspective from a religion or a school of thought to share, throw it on the table and we’ll discuss it, but it's not required. * Is there a specific philosophy that Practical Philosophy is focused on? The goal of our meet-ups is to not have dogmatic discussions, and flex our critical thinking muscles. Because of this, we want to hear from every realm of thought, and don't study a particular school. * Is it mostly men that attend? Surprisingly, no! Although philosophy is seen as a Candelabra affair in a dark room with a bunch of guys, our Practical Philosophy meetups are generally 50/50 between genders, and we don’t meet in any dark rooms. * Can I come alone? Of course you can, we encourage it :) * Can I be late? Please don't be! We do have a 15 minute grace period where we allow people to funnel in while we hang out, but after that if you arrive too late, it disrupts the flow of the conversation. * Where do you meet? The location is posted in Meetup and our [Whatsapp](https://chat.whatsapp.com/CRqdyO6p6lZDIN2qVRIlWX) group for this location. It is HIGHLY RECOMMENDED that you join the Whatsapp group! If you want to know what other cities have a Practical Philosophy Club, you can see our chapters on our [website](https://www.practicalphilosophy.club/practical-philosophy-locations/). 🤝**POLICY** To respect our members privacy, we ask that no one privately message a member without first getting explicit consent. (This looks like speaking in person and being asked to message privately.) Contacting or texting other participants without prior consent is not permitted and may result in removal from the group. Practical Philosophy reserves the right to enforce this policy at its discretion to maintain a safe and respectful environment. **PRACTICAL PHILOSOPHY - Making Philosophy Available To All. ✨** Practical Philosophy hosts weekly, in-person meetups in 25+ countries, including Canada, Spain, Japan, Mexico and many more! 🗺️ \*\*\* Join our [Whatsapp group](https://chat.whatsapp.com/CRqdyO6p6lZDIN2qVRIlWX) 👈 Follow us on [Instagram](https://www.instagram.com/practicalphilosophyclub/?hl=en) 👈 Our [website](https://www.practicalphilosophy.club/) 👈

We meet on Saturdays late mornings to have a casual, meaningful conversation on topics of interest to everyone chosen on the spot by majority voting. So please feel free to propose your own topic! Everyone is welcome to talk, but if you prefer to just join and listen, that is perfect too. As the contacted cafés usually only give reservations to eating guests, it is very welcome if you order something to eat during our stay. This is however not mandatory. This event is in English. The exact place can still change.

Welcome to another exciting evening of NixOS! If there are no speakers, we just hold a regular hack evening. Room: Kantine, 1. Sal, PASCAL\* ## Details Interested in NixOS? Maybe only its package manager Nix? Want to share how you (ab)use Nix(OS) in your own company? Join this NixOS user group meet-up! Topic will be announced. *Why NixOS?* **NixOS The Purely Functional Linux Distribution** NixOS is a Linux distribution with a unique approach to package and configuration management. Built on top of the Nix package manager ( nixos.org/nix ), it is completely declarative, makes upgrading systems reliable, and has many other advantages ( nixos.org/nixos/about.html ). **Declarative** NixOS has a completely declarative approach to configuration management: you write a specification of the desired configuration of your system in NixOS’s modular language, and NixOS takes care of making it happen. **Reliable** NixOS has atomic upgrades and rollbacks. It’s always safe to try an upgrade or configuration change: if things go wrong, you can always roll back to the previous configuration. Come join us for a cosy night of Nix(OS). There will be pizza, kindly sponsored by PROSA

**How can I live a happy life?** **What kind of person should I be?** **The Nicomachean Ethics by Aristotle is a self-help book written in the fourth century BC and a masterpiece of Western philosophy.** **We are reading it slowly together, discussing and commenting on it as we go along.** **No previous knowledge or preparation is necessary.** **This is the text:** https://drive.google.com/file/d/1QeXc6geLCrJvvVh6BdJrsPP6To6ywBYM/view?usp=sharing

**𝗗𝗘𝗔𝗥 𝗪𝗢𝗥𝗟𝗗 – the international week-breaker** Your favorite after-work/after-uni bar night to connect, relax, and meet amazing people at ease. **\- average age range is from 20\-30 \(everyone is welcome\)** **\- we are always many more people than sign up here on meetup as most traffic and updates happen on IG** **Happy New Year!** Let's start another amazing year of Dear World the way we know it - together! At Pool, we enjoy the super cozy vibes indoor and outdoor while always having some pool tables to mingle for some competition. 📸 IG @dearworldcph (for impressions from past events!) As the days are colder and shorter, we’re bringing the energy to our nights – with over 100+ at our bar nights and 200+ at our parties, 𝗗𝗘𝗔𝗥 𝗪𝗢𝗥𝗟𝗗 keeps growing! For almost 2 years now, we’ve been uniting Copenhagen’s international crowd (and locals) – countless nationalities, shining in different languages 🌍 Think easy-going conversation starters like flags, rotating chat charms & playful questions – all designed to spark great chats and eliminate any awkwardness. 📍 POOL, Gothersgade 8C, 1123 København 🕖 When: starting at 19:00 (hosts & stickers until 22:00, the night continues however long you like) Let’s raise a glass, meet familiar and new faces, and break the week – together 🥂 𝗗𝗘𝗔𝗥 𝗪𝗢𝗥𝗟𝗗 The space for internationals and open-minded locals to connect in Copenhagen. Whether you’re looking to socialize, network, make friends, or simply vibe – just show up. Come solo or bring your crew – we’ve got you. Got questions? DM us on Instagram @dearworldcph or reach out to the host here. Let’s make Wednesdays the new favorite day of the week 🌇

♠️ **Poker Night — No Real Money, Just Good Games & Nice People** 🍸 Want to enjoy poker without any financial stakes? Come play, think, and connect with people who also love strategic challenges. **This event is for you if you...** * Enjoy poker and love talking strategy * Are curious about math, game theory * Find the psychology of reading people fascinating * want to meet like-minded people **What to expect** We play Texas Hold'em with play money — so the only thing on the line is your pride. 😄 The atmosphere is chill: cards, good drinks, and discussions about poker strategies. **New to poker?** No worries — we kick off with a beginner's introduction and basic strategy walkthrough. Join us from **18:15**. **Already know your way around the felt?** Jump straight in from **18:30**. Feel free to come and go as you please — no commitment required. The venue is open from **18:00**. **Track your progress on our leaderboard** and see who comes out on top across sessions. See you at the table! 🎰

Hi everyone! Let's gather and share our reading. As usual, we will meet at the fourth floor of the Central Library as it has good facilities for book clubs and it is also free to use. No extra cafe money to spend. Idea is to meet and connect over books. Each participant present 1-2 books they would like to recommend or just talk about, and then we'll see where conversation leads us. Again, there is no limitation to genre or type of book you are reading. The point is that we are free to read whatever we want and then share those reading experiences, so remember to be respectful to each other. I hope to see as many of you as possible. :)

**Welcome to Drunken Philosophy** a casual, curious social discussion **Optional topic for this meetup: What's up with all the AI hate?** A recent survey found that 74% of Americans have a negative view of AI, and I want to know why. Come out and debate whether AI is good or bad. My hot take: a labor-saving tool that could potentially help cure cancer gets called dangerous because it might raise unemployment or cause a speculative investment bubble, that tells you a lot more about capitalism and the economic system we live under than it does about the tool itself. As a computer programmer, I think AI is a wonderful tool that has increased my productivity by at least an order of magnitude. I'd go so far as to say Claude Code is the best tool I have ever used. Debate me and name a better one. Is AI potentially dangerous? Yes, but so are a lot of tools. Chainsaws. Steam engines (early ones would occasionally explode and kill everyone in the room). Do you think cavemen sat around debating whether fire could be used as a weapon or for self-harm, and decided not to discover it? I have two friends who hate AI for opposite reasons: one thinks it's a fad and not useful, and the other thinks it's going to take over everything and cause human extinction. Come out tonight, have a friendly debate, and make some friends. No lectures. Friendly crowd. Drop in for one drink and stay if it's fun.

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

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 You will need to scan your ID at the door to get a visitor badge. **Abstract** TBD **YouTube Link** TBD

Customer identity resolution becomes increasingly complex as organizations scale across multiple systems, regions, and data formats. Traditional rule-based approaches often fail to keep up with data variability, require constant manual tuning, and struggle with real-time processing needs. This session presents a practical approach to building a scalable identity resolution pipeline using AWS services and modern AI techniques. The architecture combines data ingestion through Amazon S3 and AWS Glue, transformation pipelines using Spark on EMR, and machine learning models deployed via SageMaker for entity matching and standardization. Graph-based relationship modeling is implemented using Amazon Neptune to improve resolution accuracy by incorporating household and shared attribute context. We will walk through how machine learning models can be used for name and address normalization, how intelligent blocking strategies improve matching efficiency, and how feedback loops can be introduced to continuously improve accuracy. The session also highlights how serverless components such as AWS Lambda can be used for orchestration and real-time processing. **SPEAKER BIO** Mosaic Syed is a Senior Data Engineering and Cloud Solutions Architect with over 20 years of experience designing and delivering scalable, secure, and high-performance data solutions across global enterprise environments. https://www.linkedin.com/in/mosaic-basha-syed-92300856 **CALL FOR SPEAKERS** Learn more: [https://www.awscolumbus.com/get-involved/](https://www.awscolumbus.com/get-involved/) **THANK YOU** *VEEAM* for hosting our meetup! To learn more about *Veeam*, please visit their website: [https://www.veeam.com/](https://www.veeam.com/) **DIRECTIONS** 8800 Lyra Dr #450 · Columbus, OH go to 4th floor. **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

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)

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

Join the Columbus AI community for our quarterly gathering — a casual, community-focused evening where everyone has a chance to share, learn, and connect. These open mic–style events give anyone in the community up to **5 minutes** to present a project, share a tool, pose a question, or offer a perspective on the evolving AI space. No slides required — just a welcoming space to exchange ideas and keep the local AI conversation moving. If you’d like to take the stage, message \*\*Chris (the organizer)\*\*with a **title and short description** of what you’d like to share. 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.linkedin.com/company/transformlabs/) Sign up also accessible via [Transform Labs Luma](https://luma.com/transformlabshq)