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Tim

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Tim submitted a Comment to Problem 60783. Convert integers from base 10 to proper primary notation

Representing negative numbers by swapping all the m's and p's would make for a rather elegant feature of this system. Even so, I don't think the system as a whole will catch on sufficiently to supplant the decimal system, as old and tired as that may be.

on 10 Jan 2025

Tim submitted a Comment to Problem 60783. Convert integers from base 10 to proper primary notation

If I understand correctly, for n=-1800 the sorting rule m<x<p should give 'mmmmmmmmmmmmmmmmmmmmmmmmpmxmmmmm' rather than 'mmmmmmmmmmmmmmmmmxmmmmmmmmmmmmmp'; the test suite seems to use m<x<p for positive n, but p<x<m for negative n, so that the results for +n and -n always look the same but with m and p swapped.

on 8 Jan 2025

Tim submitted Solution 14488502 to Problem 154. Reverse Boggle

on 15 Dec 2024

Tim submitted Solution 14427453 to Problem 43754. Lah Numbers

on 4 Dec 2024

Tim submitted a Comment to Problem 60743. Bit Stream conversion to Audio Frequency Shift Key using Bell 202 (Modem)

I should have prefaced the previous comment with "If I understand what is going on, ".

on 3 Oct 2024

Tim submitted a Comment to Problem 60743. Bit Stream conversion to Audio Frequency Shift Key using Bell 202 (Modem)

For the case in the plot, binaryToBell202('101',1.2e5,600), there are three sine waves for the three bits, each of which is 1/600 seconds long. The first sine wave, at 1200Hz, goes through exactly two periods, so it starts and ends at zero; the second, at 2200Hz, goes through 3+(2/3) periods, so it starts at zero and ends at sin(2*pi*(2/3))=-sqrt(3)/2=-0.866; the third sine wave goes through exactly two periods again, and therefore should end at -0.866 again. This is independent of the sample rate. If you are trying to match the sine waves at the discrete points defined by the sample rate, then it gets more confusing.

on 3 Oct 2024

Tim submitted Solution 14332559 to Problem 1325. Special matrix

on 24 Sep 2024

Tim submitted Solution 14319471 to Problem 55920. Juros Simples

on 24 Sep 2024

Tim received Community Group Solver badge for Project Euler IV

on 23 Sep 2024
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