Why in the product notation, if the top value is less than the bottom one, the product results to $1$?
7443
Why is empty product defined to be $1$?
13953
Floor function of a product
147111
Where is the Proof for the Sum-to-Product rule derrived from?
63672
Understanding a particular evaluation of $\prod\limits_{n=2}^{\infty}\left(1-\frac{1}{n^3}\right)$
87999
Product Notation for Multiplication in Reverse Order
107390
Why is (-1)(-1) = 1?
95057
Possible fake proof of $1= -1$
71653
Why is the Cartesian product of a set $A$ and empty set an empty set?
7802
Showing $\prod\limits_{i<j} \frac{x_i-x_j}{i-j}$ is an integer
134050
Question about set notation: what does $]a,b[$ mean?
63071
the least possible value for :$ \lfloor \frac{a+b}{c}\rfloor +\lfloor \frac{b+c}{a} \rfloor+\lfloor \frac{c+a}{b} \rfloor $
55357
Why does drawing $\square$ mean the end of a proof?
132239
Why is the solution single-valued?
21903
What is the difference between [0-9]+ and [0-9]++?
130207
Why is the p-value written with a supremum?
17532
Why does Simplify[b-a] give -a+b and not b-a?
114736
What does 1 with an inequality in the subscript mean?