Question

Tiling 2 by N rectangle with Tetris shapes

score 42 · Answer 1 · 2026-03-29 15:53:32

42

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Tiling 2 by N rectangle with Tetris shapes

Published on 29 Mar 2026 - 15:53

score 141 · Answer 2 · 2026-04-05 21:28:20

141

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Rational approximation of $\pi$ by recursion

Published on 05 Apr 2026 - 21:28

score 135 · Answer 3 · 2026-04-03 19:39:15

135

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Expected amount of increments of a base-4 number until it has 5 digits, when each digit has a 1/6 chance of being reset to 0

Published on 03 Apr 2026 - 19:39

score 348 · Answer 4 · 2026-04-06 13:11:12

348

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What functions from $\Bbb N\to\Bbb N$ can be made from $+$, $-$, $\times$, $\div$, exponentiation, and $\lfloor\cdot\rfloor$?

Published on 06 Apr 2026 - 13:11

score 84 · Answer 5 · 2022-12-28 18:31:43

84

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Recursive identity

Published on 28 Dec 2022 - 18:31

score 111 · Answer 6 · 2026-03-30 05:23:30

111

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Peano structure ordering and the recursion theorem circular definitions

Published on 30 Mar 2026 - 5:23

score 49 · Answer 7 · 2026-04-02 00:57:32

49

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Proof of recursive multiply algorithm correctness

Published on 02 Apr 2026 - 0:57

score 444 · Answer 8 · 2023-01-04 21:04:44

444

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Use a recursion tree to determine a good asymptotic upper bound for the function $T(n) = 2T(n−2)+1$

Published on 04 Jan 2023 - 21:04

score 22 · Answer 9 · 2026-04-07 12:50:00

22

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$m$-degree of a simple set contains infinitely many $1$-degrees

Published on 07 Apr 2026 - 12:50

score 119 · Answer 10 · 2026-04-02 01:00:15

119

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Asymptotic analysis of recursion with Big O

Published on 02 Apr 2026 - 1:00

score 3.2k · Answer 11 · 2026-04-02 01:00:17

3.2k

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Recurrence equation for $T(n)=4T(n/2)+cn$

Published on 02 Apr 2026 - 1:00

score 44 · Answer 12 · 2023-01-09 22:13:26

44

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Proving a Recursive Sequence Identity

Published on 09 Jan 2023 - 22:13

score 115 · Answer 13 · 2023-01-12 11:58:06

115

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Define binary tree function to sum the number of nodes at odd levels

Published on 12 Jan 2023 - 11:58

score 403 · Answer 14 · 2023-01-15 15:14:48

403

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Find positive integers $c,d$ so that there are nonempty finite sets of integers $A,B$ such that $x+c\in B$ if $x\in A$ and $x^2−d\in A$ if $x\in B$.

Published on 15 Jan 2023 - 15:14

score 461 · Answer 15 · 2026-04-02 01:03:41

461

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Recurrence equation for $T(n)=T(n-1)+cn$ by substitution (induction)

Published on 02 Apr 2026 - 1:03

List Question

Tiling 2 by N rectangle with Tetris shapes

Rational approximation of $\pi$ by recursion

Expected amount of increments of a base-4 number until it has 5 digits, when each digit has a 1/6 chance of being reset to 0

What functions from $\Bbb N\to\Bbb N$ can be made from $+$, $-$, $\times$, $\div$, exponentiation, and $\lfloor\cdot\rfloor$?

Recursive identity

Peano structure ordering and the recursion theorem circular definitions

Proof of recursive multiply algorithm correctness

Use a recursion tree to determine a good asymptotic upper bound for the function $T(n) = 2T(n−2)+1$

$m$-degree of a simple set contains infinitely many $1$-degrees

Asymptotic analysis of recursion with Big O

Recurrence equation for $T(n)=4T(n/2)+cn$

Proving a Recursive Sequence Identity

Define binary tree function to sum the number of nodes at odd levels

Find positive integers $c,d$ so that there are nonempty finite sets of integers $A,B$ such that $x+c\in B$ if $x\in A$ and $x^2−d\in A$ if $x\in B$.

Recurrence equation for $T(n)=T(n-1)+cn$ by substitution (induction)

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