Correct Demonstration?
21241
Proving $\,a\mid bc\!\iff\! \frac{a}{(a,b)}\!\mid c\ $ [general Euclid's Lemma]
125263
How to crack the proof
67578
Is this a correct demonstration for why elements above untriseptium cannot exist?
114351
"that that"?!? how to properly express doubt about a distance object?
134049
Showing an inequality is valid
100104
How to do a flawless and natural presentation?
94686
A bug I can't seem to spot, faulty logic?
84923
Need some help for an experiment (Eye animation)
150855
Wanting input on inputs
142300
Winding number (demonstration)
10664
"We have showed that"/ "We have shown that" or "We showed that"?
54463
Is it: My apples and orange are/is wrong?
134332
Right or left? When the teacher says: "If you look at the diagram on the left hand side, you will solve this question!"(In a position like this?)
43767
Punctuating illustrating questions
63141
Need help with a work around
149064
Referee says the proof is wrong, but it is not, what to do?
154351
Basic question on experimental plots