1 − 2 + 3 − 4 + ⋯
INFINITE SERIES
1 - 2 + 3 - 4 + · · ·; 1 - 2 + 3 - 4 + …; 1 - 2 + 3 - 4 + ...; 1 − 2 + 3 − 4 + …; 1−2+3−4+···; 1-2+3-4+···; 1-2+3-4+…; 1-2+3-4+...; 1−2+3−4+…; 1−2+3−4+...; 1-2+3-4+; 1-2+3-4; 1−2+3−4+; 1−2+3−4; 1 − 2 + 3 − 4 +; 1 − 2 + 3 − 4; 1 - 2 + 3 - 4 +; 1 - 2 + 3 - 4; 1 − 2 + 3 − 4 + . . .; 1 - 2 + 3 - 4 + . . .; 1 − 2 3 − 4 · · ·; 1 - 2 + 3 - 4 ...; 1 − 2 + 3 − 4 + · ·; 1 − 2 + 3 − 4 + ·; 1- 2 + 3 - 4; 1 − 2 + 3 − 4 + ...; 1 − 2 + 3 − 4 + ···; 1 − 2 + 3 − 4 + · · ·
In mathematics, 1 − 2 + 3 − 4 + ··· is an infinite series whose terms are the successive positive integers, given alternating signs. Using sigma summation notation the sum of the first m terms of the series can be expressed as