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Advertisement: Get 83% off and 4 months free with CyberGhost VPN: https://www.cyberghostvpn.com/DorFuchs My video on Dedekind numbers mentioned at the end: • The 9th Dedekind number was found after 32 years... On July 2, 2024, BB(5) was found, or rather, proof that the value assumed in previous years is actually correct. Here we take a look at what BB(n) means and what interesting properties this sequence of numbers has. For those who want to delve deeper: The official announcement of the proof of The Busy Beaver Challenge https://discuss.bbchallenge.org/t/jul... The website of The Busy Beaver Challenge https://bbchallenge.org/ An article from Quanta Magazine that describes the history of the problem very well https://www.quantamagazine.org/amateu... Johannes Riebel, The Undecidability of BB(748), Bachelor thesis https://www.ingo-blechschmidt.eu/asse... T-shirts: http://www.DorFuchs.de/t-shirts/ Facebook: / dorfuchs Instagram: / dor.fuchs Twitter: / dorfuchs YouTube: / dorfuchs Website: http://www.DorFuchs.de/ Playlist with all math songs: http://bit.ly/MatheSongs Spotify: http://bit.ly/DorFuchsSpotify iTunes: http://bit.ly/DorFuchsiTunes This video was produced and published for private, non-commercial use and can be used free of charge for private purposes without consultation or written permission. Please note, however, that the video may not be altered in content or graphics. When using it, please always state the DorFuchs YouTube channel as the source. Licensing is required for commercial use and for use for educational purposes that require consent, such as public film screenings, public access via educational servers, learning platforms or educational clouds, etc. Licenses are available from our sales partner http://www.filmsortiment.de. This video is suitable and intended for school teaching purposes and is therefore a protected work in accordance with §60a and §60b of the German Copyright Act.