Evan Rosica's user avatar
Evan Rosica's user avatar
Evan Rosica's user avatar
Evan Rosica
  • Member for 9 years, 2 months
  • Last seen this week
  • Washington, DC, United States
2 votes
0 answers
62 views

Textbook Error?: Closure of the Unit Ball in a Topology whose Basis is all Vertical Lines in the plane

1 vote
3 answers
36 views

equality syntax

1 vote
0 answers
489 views

Continuity in Topological Space vs Metric Space

1 vote
1 answer
106 views

Combinatorial Proof Technique

1 vote
1 answer
51 views

Select k objects from $n$ types, such that $ 0 \leq m \leq k$ of the $k$ selections are of the same type

1 vote
0 answers
45 views

If B is a N(0,1) R.V., show $E[B^4] = 3$

1 vote
1 answer
76 views

Universe of a Union of Sets

1 vote
1 answer
328 views

Limit points and the trivial topology: A textbook error?

0 votes
1 answer
113 views

Equality of ordered n-tuples

0 votes
2 answers
79 views

Integration with no Differential?

0 votes
4 answers
1k views

Simplifying Square Roots of a Negative Number

0 votes
2 answers
1k views

Every Subset of a Finite Set is Finite (understanding Cain's proof)

0 votes
1 answer
91 views

Criticize my proof that if $A\cap B = \emptyset $ then $|A \cup B| = |A| + |B|$

0 votes
0 answers
191 views

Redefining a Variable in terms of itself vs creating a new one

0 votes
1 answer
169 views

Proof of the Kuratowski Formalization

0 votes
3 answers
90 views

Union of a set of collections

0 votes
1 answer
391 views

Continuity in Topological Spaces: Understanding a Theorem

0 votes
1 answer
211 views

Quantifiers and equivalent expressions

0 votes
1 answer
30 views

Translating the definition of closure into a set