what do those signs #1, #1^2, #1^3, & mean here?
4241
How do I work with Root objects?
103889
What does 2>&1 in this command mean?
109864
What does it mean to have a lone plus sign in the exponent/superscript (Modified Weiszfeld algorithm)
27742
What does "${-#*i}" != "$-" mean?
136641
Can someone explain the dollar sign in Javascript?
65069
What is the double bracket notation used here?
52156
What does the equal sign mean in mathematics?
150624
Why does the square root of a square involve the plus-minus sign?
101320
How to tell $i$ from $-i$?
13111
What does this $\asymp$ symbol mean? (subject: analytic number theory)
152078
What would be the symbol for 'multiplication on division'?
40127
What does "curly (curved) less than" sign $\succcurlyeq$ mean?
101128
What is "?:" notation in JavaScript?
29798
What is the meaning of double pound symbol (number sign, hash character) ##1 in an argument?
24068
Plus-minus sign in the continued fraction
33877
What does $2^x$ really mean when $x$ is not an integer?
17508
Knowing $|z|$ and $|w|$ (and possibly $z\overline{w}$), what are $|z+w|^2$, $|zw|^2$, $|z-w|^2$, $|z/w|^2$?