How do physicists know when it is appropriate to use $\mathrm dx$ as if it is a number?
65515
How to treat differentials and infinitesimals?
49984
Valid justification for algebraic manipulation of $\mathrm{d}y/\mathrm{d}x$?
154411
How can I intuitively understand complex exponents?
66975
Can Mathematica identify formulae or sequences of numbers?
157066
Do We Need the Digits of $\pi$?
20988
Notation for specifying the fractional part of a number
9737
Complex number operations: telling Mathematica variables are real
3098
How are first digits of $\pi$ found?
83851
Why does my professor say that writing $\int \frac 1x \mathrm{d}x = \ln|x| + C$ is wrong?
140352
How can I take a sensitive result for this equation?
1394
How do we know that $F = ma$, not $F = k \cdot ma$
94430
Examples of number theory showing up in physics
2796
How to tell Mathematica that certain variables are real/imaginary, integer-valued, etc
106272
Do numbers exist independently from observers?
67923
"num - 1" vs "num -= 1"
24072
Intuitive explanation of why $\dim\operatorname{Im} T + \dim\operatorname{Ker} T = \dim V$
122737
How to understand why $x^0 = 1$, where $x$ is any real number?