List questions from discrete-mathematics

Published on 12 Apr 2026 - 14:30

96

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Find a $x$ such that $2^{2015}x\equiv 1 \pmod{13}$

Published on 27 Mar 2026 - 0:03

715

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Prove there is a unique connected simple graph with degree sequence $2,2,\dots,2,1,1$.

Published on 03 Apr 2026 - 20:14

70

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What is the partition of the Set S induced by R in this example?

Published on 11 Apr 2026 - 7:07

3.2k

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Show any two edges in a 2-connected graph lie on a cycle

Published on 25 Mar 2026 - 7:43

38

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Is this relation symmetric, anti-symmetric or neither?

Published on 13 Apr 2026 - 20:17

157

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Construct a regular expression

Published on 11 Apr 2026 - 6:57

60

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Discrete Math - Recursion

Published on 11 Apr 2026 - 1:05

51

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Prove $|A \times A| \geq |A|$

Published on 11 Apr 2026 - 5:06

102

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Finding the variance of $0.2(0.8)^x$, where $x = 0, 1, 2, 3 .......$

Published on 27 Mar 2026 - 0:05

47

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Prove that $\overline{\pi}(C) = S_0^1$ if $\text{ess} \sup S_1^1 = \infty$ and $\text{ess}\inf S_1^1 = 0$

Published on 25 Mar 2026 - 19:09

126

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Prove the existence of a one-to-one function for a recursive definition

Published on 10 Apr 2026 - 1:57

158

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There exists a permutation $(A_1, \ldots , A_n)$ of the vertices $V =\{1,\ldots,n\}$ such that for all $i\in\{1,\ldots,n−1\}$, $(A_i,A_{i+1})\in E$.

Published on 25 Mar 2026 - 12:50

46

Views

Upper bound for certain number of colorings of $(2k,k^2)$-graph $G$

Published on 25 Mar 2026 - 6:06

328

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What's the probability two students present consecutively?

Published on 13 Apr 2026 - 1:28

List Question

Why equality of relations is defined like that?

Find a $x$ such that $2^{2015}x\equiv 1 \pmod{13}$

Prove there is a unique connected simple graph with degree sequence $2,2,\dots,2,1,1$.

What is the partition of the Set S induced by R in this example?

Show any two edges in a 2-connected graph lie on a cycle

Is this relation symmetric, anti-symmetric or neither?

Construct a regular expression

Discrete Math - Recursion

Prove $|A \times A| \geq |A|$

Finding the variance of $0.2(0.8)^x$, where $x = 0, 1, 2, 3 .......$

Prove that $\overline{\pi}(C) = S_0^1$ if $\text{ess} \sup S_1^1 = \infty$ and $\text{ess}\inf S_1^1 = 0$

Prove the existence of a one-to-one function for a recursive definition

There exists a permutation $(A_1, \ldots , A_n)$ of the vertices $V =\{1,\ldots,n\}$ such that for all $i\in\{1,\ldots,n−1\}$, $(A_i,A_{i+1})\in E$.

Upper bound for certain number of colorings of $(2k,k^2)$-graph $G$

What's the probability two students present consecutively?

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