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Japanese polygon theorem
11/05/25 - 04:45AM MST
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Tetrahedral analog of the Pythagorean theorem
11/03/25 - 09:12AM MST
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The anti-Smith chart
11/02/25 - 03:12PM MST
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Impedance and Triangular Numbers
11/02/25 - 06:10AM MST
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Cross ratio
11/01/25 - 07:28AM MST
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Text case changes the size of QR codes
10/31/25 - 08:44AM MST
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An ancient generalization of the Pythagorean theorem
10/30/25 - 06:02AM MST
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Mentally compute logs base 2
10/29/25 - 07:24AM MST
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Physical Keys and Encryption Keys
10/29/25 - 04:50AM MST
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Freshman’s dream
10/28/25 - 08:21AM MST
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Why and how Bitcoin uses Merkle trees
10/28/25 - 07:00AM MST
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How blocks are chained in a blockchain
10/27/25 - 08:54AM MST
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987654321 / 123456789
10/26/25 - 06:23AM MST
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Spacing the circles on the Smith chart
10/25/25 - 07:47AM MST
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How to make a Smith chart
10/23/25 - 07:16AM MST
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Generating random points in Colorado
10/22/25 - 05:08AM MST
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Random spherical coordinates
10/22/25 - 05:06AM MST
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Distribution of correlation
10/20/25 - 05:12AM MST
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Distribution of coordinates on a sphere
10/18/25 - 06:24PM MST
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ODE to Fisher’s transform
10/18/25 - 03:40PM MST
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Quality metrics
10/18/25 - 11:41AM MST
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Turning trig identities into Fibonacci identities
10/17/25 - 04:58AM MST
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Experiences with GPT-5-Codex
10/16/25 - 11:47AM MST
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Ethereum’s consensus layer elliptic curve
10/13/25 - 05:53AM MST
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Inverting matrices and bilinear functions
10/12/25 - 10:40AM MST
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Generate random points inside a sphere
10/11/25 - 03:10PM MST
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Random samples from a tetrahedron
10/11/25 - 05:20AM MST
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GPT-5 for AI-assisted discovery
10/10/25 - 07:26AM MST
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More on Carmichael
10/09/25 - 06:57AM MST
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Differential equation on a doughnut
10/08/25 - 05:27PM MST