Disambiguation evidence for Dyson’s proof of equivalence of Feynman and Schwinger–Tomonaga formulations of QED via surface form

"Dyson series expansion for the S-matrix"

As object (1)

Triples where some other subject referred to this entity as "Dyson series expansion for the S-matrix".

Gell-Mann–Low theorem → implies →
"Dyson series expansion for the S-matrix"
↳ resolves to Dyson’s proof of equivalence of Feynman and Schwinger–Tomonaga formulations of QED
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