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מדויקת 5.5.2022 - 6/6


ניצחתי במשחק מילותיים מס' 90:
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ישראלים - בואו לערב גו על הבר!
משחקים באווירה קלילה עם בירה ואוכל :)
יום שלישי ה-10.5 באלנבי 16 תל-אביב.

In quantum mechanics, the magnetic field says how much the phase of a charged particle rotates when you move that particle around a loop!

(Not counting other effects.)

This means that the magnetic field is fundamentally something you want to integrate over a surface.


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...

because I have so many new users coming #mastodonTips #mastodon


1) in addition to a bio, consider also making an #introduction / #introduction post also check this tag to find people who are also new and their interests

2) 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.

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 -

שלום! אני מתמטיקאי חובב, עובד כמפתח אלגוריתמים. אוהב ציורים מתמטיים יפים, כותב את הבלוג "סדר חלקי" -

אני היוצר של "מדויקת" -

Favorite fruit 🥑 הפרי האהוב עלי

Can you show that
\[f(x) := \lfloor x\rfloor\]
is the sum of two periodic functions?


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