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Calculemus's user avatar
Calculemus's user avatar
Calculemus
  • Member for 9 years, 7 months
  • Last seen more than a month ago
  • Canada
277 votes
4 answers
34k views

The Mathematics of Tetris

  • 70.1k
213 votes
9 answers
11k views

What does $2^x$ really mean when $x$ is not an integer?

  • 3,887
62 votes
14 answers
5k views

What is a proof?

46 votes
7 answers
2k views

Struggling with "technique-based" mathematics, can people relate to this? And what, if anything, can be done about it?

  • 65.5k
42 votes
4 answers
62k views

How do I divide a function into even and odd sections?

  • 709
34 votes
6 answers
3k views

Book/tutorial recommendations: acquiring math-oriented reading proficiency in German

  • 1
27 votes
1 answer
2k views

Examples of falsified (or currently open) longstanding conjectures leading to large bodies of incorrect results.

  • 28.8k
20 votes
4 answers
18k views

Sum of the supremum and supremum of a sum

  • 100
17 votes
6 answers
12k views

Companions to Rudin?

13 votes
3 answers
629 views

Being mathematically critical: how should a student approach statements that appear to be obvious?

11 votes
4 answers
646 views

what is the definition of $=$?

  • 2,042
10 votes
5 answers
653 views

Is -5 bigger than -1?

6 votes
3 answers
7k views

Does continuity always imply integrability?

3 votes
2 answers
1k views

Proof of validity of tautology in first order logic

  • 31
3 votes
5 answers
34k views

Convert expression to NAND only

2 votes
3 answers
145 views

Proof by cases that $x \le |x|$?

2 votes
4 answers
96 views

What is the derivative of $\ln|x|$?

  • 1,706
1 vote
3 answers
2k views

Solving logic word problems

1 vote
0 answers
127 views

Translation Sentence with Four Predicates

1 vote
1 answer
101 views

A proof related to the convergence of Cauchy sequences

  • 5,115
0 votes
2 answers
140 views

FOL: Two friends have different friends

0 votes
1 answer
380 views

Translating English into Predicate Logic.