Please enjoy this awesome video of the HR 8799 system made by Jason Wang, for anyone who hadn't seen it yet.
The star itself was blocked by the telescope so we can see the planets, though some of the light still scatters around the edges. All four known planets are visible. The orbital motion is interpolated from a series of images taken by the Keck Telescope in Hawaii.
As for the planets themselves...
2) https://communitywiki.org/trunk is a wonderful place to find people who are active. it is human moderated. if you decide to stick around and have the bandwidth to do so, consider joining a list to welcome others as well.
For a \(n\times n\) grid, the lights out game can be considered as solving a linear system over \(n^2\) variables in mod \(2\). It takes \(O(n^6)\) time. Surprisingly, there is a \(O(n^3)\) time algorithm. https://chaoxuprime.com/posts/2019-01-12-lights-out-game.html
Hi! Hobbyist mathematician here, algorithms developer by trade. Love the pretty pictures y'all are posting here :)
I'm working on starting a joint blog with some of my family - Blogarithmic Spiral - https://livne.blog
שלום! אני מתמטיקאי חובב, עובד כמפתח אלגוריתמים. אוהב ציורים מתמטיים יפים, כותב את הבלוג "סדר חלקי" - https://partial-order.com
אני היוצר של "מדויקת" - https://meduyeket.net
Favorite fruit 🥑 הפרי האהוב עלי
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