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27 Questions

Views Newest Activity Votes

votes

answers

18k

views

Is Morse code without spaces uniquely decipherable?

information-theory coding-theory

Dec 12 '14 at 4:27 Community♦ 1

votes

answers

views

What use are groups, monoids, and rings in database computations?

reference-request discrete-mathematics database-theory applied-theory group-theory

Feb 28 '16 at 16:32 Community♦ 1

votes

answers

views

Random sampling in a polygon

algorithms randomness sampling random-number-generator

Dec 31 at 3:19 Glorfindel 244

votes

answer

423

views

How is IO a monad?

programming-languages functional-programming

Jan 9 at 14:28 Glorfindel 244

votes

answers

441

views

integer factoring using Fermat's method

algorithms number-theory factoring

Nov 20 '16 at 19:51 gnasher729 12.9k

votes

answers

282

views

Can we prove that $1 + 2 + \dots + n = \frac{n(n+1)}{2}$ using a computer program?

type-theory functional-programming type-checking proof-assistants

Aug 30 '15 at 11:00 Community♦ 1

votes

answer

views

circle packing algorithm used by Percolator

algorithms computational-geometry discrete-mathematics image-processing

Jun 27 '13 at 15:34 Community♦ 1

votes

answers

views

why not just use a random number generator as a hash function?

hash probabilistic-algorithms

Sep 25 '13 at 19:24 Community♦ 1

votes

answers

239

views

counting arithmetic progressions $a, a+r, a+2r$ in a list

algorithms number-theory lists

Aug 6 '14 at 9:34 Community♦ 1

votes

answer

550

views

what is the name for the space between the leaves of a tree

terminology trees binary-trees number-theory

May 16 at 16:03 Community♦ 1

votes

answer

views

Generating all words of length $n$ avoiding $A^2$ and $B^3$

regular-expressions recursion iteration

Apr 4 '18 at 12:55 Yuval Filmus 200k

votes

answers

views

Listing integers as the sum of three squares $m = x^2 + y^2 + z^2$

algorithms number-theory

Oct 14 '17 at 20:26 gnasher729 12.9k

votes

answers

views

How do learn the most important nodes in a tree?

data-structures machine-learning trees strings natural-language-processing

Jun 14 '14 at 21:52 Thyamarkos 131

votes

answer

views

Can this Arrow-Ring puzzle be encoded as an integer programming problem?

arrays integer-programming board-games hamiltonian-path

Jul 28 at 14:11 orlp 6,585

votes

answers

102

views

How to decompose a unit cube into tetrahedra?

computational-geometry discrete-mathematics

Mar 30 '18 at 12:17 Yuval Filmus 200k

votes

answers

343

views

Find the duplicates in a list of floating point numbers

sorting integers floating-point lists

Aug 3 '16 at 12:50 madmech 3

votes

answer

436

views

Can we prove mathematical induction statements in Lisp?

functional-programming induction proof-assistants lisp

Aug 31 '15 at 18:34 Community♦ 1

votes

answer

300

views

connected components - determining “groups” in Go

algorithms graphs

Sep 7 '14 at 19:35 D.W.♦ 105k

vote

answer

views

Algorithm for implementing the modulus “%” operator?

arithmetic floating-point integers

Jul 30 at 15:40 gnasher729 12.9k

vote

answer

views

Regular expression for words in a language where each letter appears at least once

regular-languages finite-automata regular-expressions

Aug 12 '15 at 10:25 Community♦ 1

vote

answers

views

Finding all “smooth” numbers up to 10^6 — problem with nested loops [duplicate]

algorithms number-theory

Feb 28 '15 at 15:48 john mangual 956

vote

answers

305

views

Can the Sieve of Eratosthenes be adapted to find twin primes

algorithms recursion primes

Aug 15 '14 at 14:26 Community♦ 1

vote

answers

282

views

criterion for two line segments intersecting

computational-geometry

Jun 27 '14 at 20:22 Yves Daoust 1,750

vote

answers

221

views

choice of data structure for domino tilings

data-structures combinatorics tiling

Jun 6 '14 at 21:35 Simon S 508

vote

answer

670

views

iterating over subsets by switching one element at a time

algorithms graph-theory finite-automata

Jan 8 '14 at 21:29 Yuval Filmus 200k

vote

answer

883

views

Facebook Hackercup 2013: Balanced Smileys

algorithms context-free binary-trees parsing

Jan 30 '13 at 12:46 Community♦ 1

vote

answers

740

views

Longest Increasing Subsequence

algorithms arrays subsequences

Oct 11 '12 at 21:06 Community♦ 1

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27 Questions

Is Morse code without spaces uniquely decipherable?

What use are groups, monoids, and rings in database computations?

Random sampling in a polygon

How is IO a monad?

integer factoring using Fermat's method

Can we prove that $1 + 2 + \dots + n = \frac{n(n+1)}{2}$ using a computer program?

circle packing algorithm used by Percolator

why not just use a random number generator as a hash function?

counting arithmetic progressions $a, a+r, a+2r$ in a list

what is the name for the space between the leaves of a tree

Generating all words of length $n$ avoiding $A^2$ and $B^3$

Listing integers as the sum of three squares $m = x^2 + y^2 + z^2$

How do learn the most important nodes in a tree?

Can this Arrow-Ring puzzle be encoded as an integer programming problem?

How to decompose a unit cube into tetrahedra?

Find the duplicates in a list of floating point numbers

Can we prove mathematical induction statements in Lisp?

connected components - determining “groups” in Go

Algorithm for implementing the modulus “%” operator?

Regular expression for words in a language where each letter appears at least once

Finding all “smooth” numbers up to 10^6 — problem with nested loops [duplicate]

Can the Sieve of Eratosthenes be adapted to find twin primes

criterion for two line segments intersecting

choice of data structure for domino tilings

iterating over subsets by switching one element at a time

Facebook Hackercup 2013: Balanced Smileys

Longest Increasing Subsequence