Profile Activity

john mangual

Meta user

Network profile

Reputation

1,831

1.8k
1.5k
1.3k

2016
2017
2018
2019

Top tag

discrete-mathematics

Next privilege

2,000 Rep.

Edit questions and answers

Badges

Newest

Yearling

Next badge

0/1

Impact

1 post edited

0 helpful flags

57 votes cast

Summary Answers Questions Tags Badges Favorites Bounties Reputation All actions

28 Questions

Views Newest Activity Votes

votes

answers

20k

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 '18 at 3:19 Glorfindel 266

votes

answer

512

views

How is IO a monad?

programming-languages functional-programming

Jan 9 '19 at 14:28 Glorfindel 266

votes

answers

461

views

integer factoring using Fermat's method

algorithms number-theory factoring

Nov 20 '16 at 19:51 gnasher729 16k

votes

answers

290

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

264

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

698

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

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 16k

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 '18 at 14:11 orlp 8,001

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 213k

votes

answers

174

views

How to decompose a unit cube into tetrahedra?

computational-geometry discrete-mathematics

Mar 30 '18 at 12:17 Yuval Filmus 213k

votes

answers

403

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

465

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

329

views

connected components - determining “groups” in Go

algorithms graphs

Sep 7 '14 at 19:35 D.W.♦ 112k

vote

answer

162

views

Algorithm for implementing the modulus “%” operator?

arithmetic floating-point integers

Jul 30 '18 at 15:40 gnasher729 16k

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 1,831

vote

answers

336

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

311

views

criterion for two line segments intersecting

computational-geometry

Jun 27 '14 at 20:22 Yves Daoust 1,917

vote

answers

240

views

choice of data structure for domino tilings

data-structures combinatorics tiling

Jun 6 '14 at 21:35 Simon S 583

vote

answer

718

views

iterating over subsets by switching one element at a time

algorithms graphs finite-automata

Jan 8 '14 at 21:29 Yuval Filmus 213k

vote

answer

987

views

Facebook Hackercup 2013: Balanced Smileys

algorithms context-free binary-trees parsing

Jan 30 '13 at 12:46 Community♦ 1

vote

answers

771

views

Longest Increasing Subsequence

algorithms arrays subsequences

Oct 11 '12 at 21:06 Community♦ 1

votes

answers

views

Flow Free as an integer programming

algorithms integer-programming

Jun 26 at 23:02 john mangual 1,831

Stack Exchange Network

current community

your communities

more stack exchange communities

Next privilege

Next badge

28 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

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?

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

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

Flow Free as an integer programming