List questions from solution-verification

Published on 14 Apr 2026 - 5:15

178

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The closure is a subset of a closed set - Metric spaces

Published on 15 Apr 2026 - 12:32

65

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How many integer numbers with four distinct digits exist that they are either additive or reductive (check my answer)

Published on 15 Apr 2026 - 11:58

87

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Showing that $\sum\limits_{j=0}^\infty a_j=\sum\limits_{k=0}^\infty b_k$

Published on 13 Apr 2026 - 12:38

847

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Calculating probability of a random variable

Published on 11 Apr 2026 - 14:56

59

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On entire function

Published on 11 Apr 2026 - 2:15

185

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Proof that an isometry preserves straight lines

Published on 13 Apr 2026 - 22:16

44

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Proving a particular "basic" property of the Hilbert symbol.

Published on 14 Apr 2026 - 4:46

80

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Cardinality of Set of All Sequences on $\omega$.

Published on 09 Apr 2026 - 19:41

175

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An important corollary of Hahn - Banach Theorem

Published on 09 Apr 2026 - 8:34

44

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Proof Verification: $|\bigcup \mathscr{A}| \leq | \mathscr{A}| \cdot \kappa$

Published on 12 Apr 2026 - 6:46

394

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Symbolizing "There are exactly three..."

Published on 11 Apr 2026 - 17:14

32

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If $R = \{(1,2),(1,4),(3,3),(4,1)\}$, then is $(1,2) \in R^2$? (Powers of Relation)

Published on 15 Apr 2026 - 5:07

67

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Proof for hamiltonian graph by number of vertex

Published on 15 Apr 2026 - 19:46

58

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How to prove with working with graph or tree that there must be a row or column that has more than $3$ different digits.

Published on 15 Apr 2026 - 14:36

List Question

Proof of homomorphism theorem in S. Langs Algebra

The closure is a subset of a closed set - Metric spaces

How many integer numbers with four distinct digits exist that they are either additive or reductive (check my answer)

Showing that $\sum\limits_{j=0}^\infty a_j=\sum\limits_{k=0}^\infty b_k$

Calculating probability of a random variable

On entire function

Proof that an isometry preserves straight lines

Proving a particular "basic" property of the Hilbert symbol.

Cardinality of Set of All Sequences on $\omega$.

An important corollary of Hahn - Banach Theorem

Proof Verification: $|\bigcup \mathscr{A}| \leq | \mathscr{A}| \cdot \kappa$

Symbolizing "There are exactly three..."

If $R = \{(1,2),(1,4),(3,3),(4,1)\}$, then is $(1,2) \in R^2$? (Powers of Relation)

Proof for hamiltonian graph by number of vertex

How to prove with working with graph or tree that there must be a row or column that has more than $3$ different digits.

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