@CutTheKnotMath

Freelance mathematician and educational web developer. I am a proud Israeli American, with love and respect for both countries.

 NJ, USA
cut-the-knot.org
Joined December 2009
  • Tweets14.9K
  • Following341
  • Followers20.5K
2.2KMedia
#FF for math @CutTheKnotMath @jamestanton @JohnAllenPaulos @GlobalMathProj @stevenstrogatz @monsoon0 @aussiemath @mathyawp @octonion @MathforLove @k8nowak @maanow @Derektionary @jamesgrime @peterrowlett @JohnDCook @mathematicsprof @Mathgarden @ilana_horn @MrHonner @wilderlab
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#FF for math @CutTheKnotMath @jamestanton @JohnAllenPaulos @GlobalMathProj @stevenstrogatz @monsoon0 @aussiemath @mathyawp @octonion @MathforLove @k8nowak @maanow @Derektionary @jamesgrime @peterrowlett @JohnDCook @mathematicsprof @Mathgarden @ilana_horn @MrHonner @wilderlab
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Alexander Bogomolny retweeted
James Tanton
@jamestanton30 Jun 2018
Oh! It's #ff! Add to this ... @republicofmath (of course!) @cbrownLmath @henryseg @margaretwerth @EulersNephew @maanow @timchartier @evelynjlamb @Dr_Kreisberg @NaturalMath @mikeandallie @MathWithMatthew @DavidKButlerUoA @alittlestats @nomad_penguin @aperiodical @NoCOMTC xitter.cf/republicofmath/status/…
Republic of Mathematics@republicofmath30 Jun 2018
#FF for math @CutTheKnotMath @jamestanton @JohnAllenPaulos @GlobalMathProj @stevenstrogatz @monsoon0 @aussiemath @mathyawp @octonion @MathforLove @k8nowak @maanow @Derektionary @jamesgrime @peterrowlett @JohnDCook @mathematicsprof @Mathgarden @ilana_horn @MrHonner @wilderlab
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Alexander Bogomolny retweeted
Sam Walters ☕️@SamuelGWalters29 Jun 2018
Replying to @CutTheKnotMath
It can be equivalently rephrased as saying that if a product of 2n integers is (-1)^n (n!)^2, then their sum is zero.
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Alexander Bogomolny retweeted
Mike Lawler@mikeandallie27 Jun 2018
Quick post while traveling in Sydney - but wanted to share a really neat result I learned from @nntaleb this week. I think it is a fun idea to share with both calculus and probability students. mikesmathpage.wordpress.com/… #math #mathchat

A fascinating limit to share with both calculus and probability students

I learned an amazing identity from Nassim Taleb earlier in the week. It has taken me a few days to understand it and I wanted to write a quick post just to get my thoughts down in paper before I fo…

mikesmathpage.wordpress.com
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Alexander Bogomolny retweeted
John Urschel@JohnCUrschel23 Jun 2018
Some math fun with shapes and shadows at National Math Museum @MoMath1! Can you recognize the three faces?
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Alexander Bogomolny retweeted
math prof@mathematicsprof24 Jun 2018
I recently discovered the interesting 'general reader' math journal MaddMath, whose Twitter presence is @maddmaths. It contains many insightful articles. bit.ly/2tvYNX1
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Alexander Bogomolny retweeted
James Tanton
@jamestanton22 Jun 2018
Joyous Math Galore #ff @GlobalMathProj @republicofmath @mathyawp @evelynjlamb @MathforLove @Mathgarden @JimPropp @Dr_Kreisberg @maanow @MoMath1 @stevenstrogatz @profkeithdevlin @CutTheKnotMath @monsoon0 @fawnpnguyen @mikeandallie @NaturalMath @jamesgrime @MathigonProject
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#FF for math @CutTheKnotMath @jamestanton @JohnAllenPaulos @GlobalMathProj @stevenstrogatz @monsoon0 @aussiemath @mathyawp @octonion @MathforLove @k8nowak @maanow @Derektionary @jamesgrime @peterrowlett @JohnDCook @mathematicsprof @Mathgarden @ilana_horn @MrHonner @wilderlab
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#FF for math @CutTheKnotMath @jamestanton @JohnAllenPaulos @GlobalMathProj @stevenstrogatz @monsoon0 @aussiemath @mathyawp @octonion @MathforLove @k8nowak @maanow @Derektionary @jamesgrime @peterrowlett @JohnDCook @mathematicsprof @Mathgarden @ilana_horn @MrHonner @wilderlab
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{57,...76} and {2041, 2140} @jamestanton Every a<b from {10, ... ,16} gives a unique product. Find 20 consecutive integers for which products of pairs of elements are distinct. 100 consecutive integers with this property?
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Alexander Bogomolny retweeted
James Tanton
@jamestanton8 Jun 2018
And more joyous mathematics! #ff @Gelada @CmonMattTHINK @MathWithMatthew @CutTheKnotMath @alittlestats @monsoon0 @emwdx @averypickford @hpicciotto @JohnAllenPaulos @JenniferWathall @nomad_penguin @MikeAndrejkovic @MrHonner @EulersNephew @fawnpnguyen
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#FF for math @CutTheKnotMath @jamestanton @JohnAllenPaulos @GlobalMathProj @stevenstrogatz @monsoon0 @aussiemath @mathyawp @octonion @MathforLove @k8nowak @maanow @Derektionary @jamesgrime @peterrowlett @JohnDCook @Mathgarden @ilana_horn @MrHonner @wilderlab
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Alexander Bogomolny retweeted
Quanta Magazine
@QuantaMagazine3 Jun 2018
ICYMI: In 1967, Robert Langlands proposed a program to unite disparate mathematical fields. 51 years later, the program is a cornerstone of the exciting work being done by a new generation of mathematicians. buff.ly/2HNsvv1
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#FF for math @CutTheKnotMath @jamestanton @JohnAllenPaulos @GlobalMathProj @Mathgarden @stevenstrogatz @monsoon0 @aussiemath @mathyawp @octonion @MathforLove @k8nowak @maanow @Derektionary @jamesgrime @peterrowlett @JohnDCook @mathematicsprof @ilana_horn @MrHonner @wilderlab
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Alexander Bogomolny retweeted
James Tanton
@jamestanton25 May 2018
Joyous math left, right, and centre! #ff @GlobalMathProj @MathTeachCircle @MoMath1 @maanow @MathforLove @mathyawp @republicofmath @stevenstrogatz @profkeithdevlin @evelynjlamb @margaretwerth @pickover @JimPropp @CutTheKnotMath @JohnAllenPaulos @Mathgarden @mikeandallie – at Washington, UT
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#FF for #math @CutTheKnotMath @jamestanton @JohnAllenPaulos @GlobalMathProj @stevenstrogatz @octonion @monsoon0 @k8nowak @maanow @Derektionary @cardcolm @suevanhattum @jamesgrime @peterrowlett @JohnDCook @suburbanlion @mathematicsprof @Mathgarden @mathfour @ilana_horn
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Alexander Bogomolny retweeted
Tim Brzezinski@TimBrzezinski23 May 2018
Replying to @mathconfidence @geogebra @giohio @panlepan @solvemymaths @gogeometry @CutTheKnotMath
Hey Robin, here's how: geogebra.org/m/NUtDnGgC#mate…. This is a part of a beginner tutorial series where you can learn how to use @geogebra's tools at your own pace: geogebra.org/m/NUtDnGgC Each activity has a limited toolbar + a silent screencast (in case you get stuck).
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Alexander Bogomolny retweeted
Alice Baker@aliceyb123 May 2018
Replying to @Simon_Gregg @CutTheKnotMath
I tried it with my class today, they loved it!!
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Alexander Bogomolny retweeted
Tim Brzezinski@TimBrzezinski21 May 2018
Also looks like the 6 vertices of any equiangular hexagon lie on an ellipse! Another #UnexpectedConic? 😯 geogebra.org/m/Bq8wg5yb @geogebra @giohio @panlepan @solvemymaths @gogeometry @CutTheKnotMath #MTBoS #Math #MathChat #ITeachMath #Maths #conic
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