Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
A. Zee, Quantum Field Theory in a Nutshell
· Problem II.6.4
Field Theory Redux
Physics — QFT
Problem
Prove the identity
s
+
t
+
u
=
∑
a
m
a
2
s + t + u = \sum_a m_a^2
s
+
t
+
u
=
∑
a
m
a
2
.
Browse the problem library