Multiplication of negative numbers is always positive
87848
Formal proof for $(-1) \times (-1) = 1$
64262
cubic root of negative numbers
129163
Showing that every positive integer can be represented in this form
51402
Is multiplication not just repeated addition?
152078
What would be the symbol for 'multiplication on division'?
117656
Division in Java always results in zero (0)?
20593
Show that if $a \neq b$ and a and b are positive then $\frac{a}{b}+\frac{b}{a}$ is never an integer
106030
Find all the positive integer
3437
Basic division and multiplication
71566
Positive and negative complex numbers?
20309
Product and sum of positive operators is positive
120676
A certain element which makes functionals positive
25959
How do you compute negative numbers to fractional powers?
78294
How does one denote the set of  all positive real numbers?
119046
Expressing a positive integer as a sum of positive integers
88312
What is the accepted syntax for a negative number with an exponent?
155635
Why is the math for negative exponents so?