Question

Double sum identity involving binomial coefficients, possibly connected to umbral calculus

score 253 · Answer 1 · 2020-06-21 17:24:21

253

Views

Double sum identity involving binomial coefficients, possibly connected to umbral calculus

Published on 21 Jun 2020 - 17:24

score 220 · Answer 2 · 2020-06-23 16:53:48

220

Views

Derangement of selective letters in a string.

Published on 23 Jun 2020 - 16:53

score 137 · Answer 3 · 2020-06-24 09:32:53

137

Views

Derangement of letters with repitition

Published on 24 Jun 2020 - 9:32

score 204 · Answer 4 · 2020-06-26 03:09:03

204

Views

generalization of derangements

Published on 26 Jun 2020 - 3:09

score 124 · Answer 5 · 2020-07-02 23:12:29

124

Views

I have a problem understanding the proof of numbers (Derangements)

Published on 02 Jul 2020 - 23:12

score 466 · Answer 6 · 2020-07-03 12:41:36

466

Views

Derangement related problem-bijective functions $f: A \to A$ such that $f(x) \neq x$ and $f(1) \neq 2$

Published on 03 Jul 2020 - 12:41

score 139 · Answer 7 · 2020-07-04 16:46:10

139

Views

Proof, derangements, permutations

Published on 04 Jul 2020 - 16:46

score 70 · Answer 8 · 2020-07-05 08:12:22

70

Views

number of n sorted numbers such that there's exactly one number that $a_i = i$

Published on 05 Jul 2020 - 8:12

score 55 · Answer 9 · 2020-07-08 20:26:30

55

Views

Constructing one-one functions under a constraint using derangements

Published on 08 Jul 2020 - 20:26

score 86 · Answer 10 · 2020-07-10 09:15:38

86

Views

Assume there are $n$ people and a successful derangement has been drawn. If $1$ drew $2$, what is the probability that $2$ drew $1$?

Published on 10 Jul 2020 - 9:15

score 408 · Answer 11 · 2016-08-29 06:05:39

408

Views

Word-Problem on Forbidden Position Permutations (Derangement)

Published on 29 Aug 2016 - 6:05

score 346 · Answer 12 · 2026-02-23 02:54:35

346

Views

Recurrence formula for the Eulerian and derangement polynomial

Published on 23 Feb 2026 - 2:54

score 5.2k · Answer 13 · 2016-12-09 19:43:29

5.2k

Views

$\frac{1}{e}=$"Probability that every chocolate goes into a wrong spot".

Published on 09 Dec 2016 - 19:43

score 8.3k · Answer 14 · 2017-03-16 05:49:56

8.3k

Views

Number of Derangements of the word BOTTLE

Published on 16 Mar 2017 - 5:49

score 209 · Answer 15 · 2023-02-15 15:07:34

209

Views

Number derangements of six letters, where one letter goes in specified envelope, is $D(5)+D(4)$?

Published on 15 Feb 2023 - 15:07

List Question

Double sum identity involving binomial coefficients, possibly connected to umbral calculus

Derangement of selective letters in a string.

Derangement of letters with repitition

generalization of derangements

I have a problem understanding the proof of numbers (Derangements)

Derangement related problem-bijective functions $f: A \to A$ such that $f(x) \neq x$ and $f(1) \neq 2$

Proof, derangements, permutations

number of n sorted numbers such that there's exactly one number that $a_i = i$

Constructing one-one functions under a constraint using derangements

Assume there are $n$ people and a successful derangement has been drawn. If $1$ drew $2$, what is the probability that $2$ drew $1$?

Word-Problem on Forbidden Position Permutations (Derangement)

Recurrence formula for the Eulerian and derangement polynomial

$\frac{1}{e}=$"Probability that every chocolate goes into a wrong spot".

Number of Derangements of the word BOTTLE

Number derangements of six letters, where one letter goes in specified envelope, is $D(5)+D(4)$?

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