Why is the sum() of zero numbers not zero?
10795
Why does ANSI SQL define SUM(no rows) as NULL?
27371
A natural number multiplied by some integer results in a number with only ones and zeros
107726
Why sum of two little "o" notation is equal little "o" notation from sum?
151085
Simplify the sum $ \sum_{i=0}^{k}(-1)^i i \binom{n}{i} \binom{n}{k-i}$
39485
Why does ('0' ? 'a' : 'b') behave different than ('0' == true ? 'a' : 'b')
89279
If $\sum a_n/k^n = 0$ for all $k$, then $a_n = 0$ for all $n$
122076
A one line proof that one is zero using Mathematica 10
117656
Division in Java always results in zero (0)?
50133
The sum of odd powered real numbers equals zero implies the numbers are inverses
21903
What is the difference between [0-9]+ and [0-9]++?
157954
How many digits does the integer zero have?
13363
Why does an argument similiar to 0.999...=1 show 999...=-1?
145582
$\sum (-1)^n/n$ fails the p-series test, but passes the alternating series test?
60965
Representing a nonnegative integer as the ordered sum of odd numbers
80002
zeros of a polynomial
51260
Sum of sets of measure zero
37873
Number of zero digits in factorials