User Elimination_matrices - Mathematics Stack Exchange

6 votes

1 answer

202 views

Different definitions of the archimedean property

asked Jan 20, 2022 at 1:03

3 votes

1 answer

263 views

Proof that there is no rational number $r$ satisfying $2^r=3$ [duplicate]

asked Jan 16, 2022 at 10:03

3 votes

1 answer

120 views

Proof that $a^n-b^n$ is non prime if n is non prime

asked Jan 17, 2022 at 12:23

2 votes

1 answer

96 views

Some set theory proof

asked Jan 16, 2022 at 12:36

2 votes

1 answer

71 views

Help with Real Analysis

asked Oct 31, 2020 at 5:44

2 votes

0 answers

54 views

Help with proofs of some field properties of $\mathbb{Q}$

asked Aug 25, 2021 at 11:52

2 votes

0 answers

126 views

Show that for any two dedekind cuts $A,B \subset \mathbb{Q}$, if $A \subset B, A\neq B$, then $B-A$ is countably infinite.

asked Aug 27, 2021 at 14:50

2 votes

0 answers

27 views

A proof involving Dedekind Cuts

asked Aug 29, 2021 at 11:20

2 votes

0 answers

49 views

Is my proof of the triangle inequality correct?

asked Jan 16, 2022 at 8:34

1 vote

1 answer

254 views

Is my proof that any bounded, nondecreasing sequence converges to its supremum correct?

asked Jul 9, 2021 at 10:26

1 vote

0 answers

28 views

Is my proof that the relation ~ between pairs of integers is an equivalence relation correct?

asked Aug 24, 2021 at 2:55

1 vote

0 answers

39 views

Is my proof that the operations $+$ and $^{-1}$ are well defined for the rational numbers correct?

asked Aug 25, 2021 at 4:36

1 vote

0 answers

83 views

Is my proof of commutativity of multiplication correct (Peano's axioms Proof)

asked Oct 2, 2020 at 14:58

0 votes

1 answer

858 views

Let $G$ be the group of rigid motions in $R_3$ of a tetrahedron. Show that $|G |= 12$.

asked Oct 31, 2020 at 11:23

0 votes

0 answers

50 views

Finding the set of integers within the set of rational numbers

asked Aug 25, 2021 at 13:49

0 votes

1 answer

58 views

Help with a proof involving Dedekind Cuts

asked Aug 26, 2021 at 13:55

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16 Questions

Different definitions of the archimedean property

Proof that there is no rational number $r$ satisfying $2^r=3$ [duplicate]

Proof that $a^n-b^n$ is non prime if n is non prime

Some set theory proof

Help with Real Analysis

Help with proofs of some field properties of $\mathbb{Q}$

Show that for any two dedekind cuts $A,B \subset \mathbb{Q}$, if $A \subset B, A\neq B$, then $B-A$ is countably infinite.

A proof involving Dedekind Cuts

Is my proof of the triangle inequality correct?

Is my proof that any bounded, nondecreasing sequence converges to its supremum correct?

Is my proof that the relation ~ between pairs of integers is an equivalence relation correct?

Is my proof that the operations $+$ and $^{-1}$ are well defined for the rational numbers correct?

Is my proof of commutativity of multiplication correct (Peano's axioms Proof)

Let $G$ be the group of rigid motions in $R_3$ of a tetrahedron. Show that $|G |= 12$.

Finding the set of integers within the set of rational numbers

Help with a proof involving Dedekind Cuts