Template:Individual-TLP-paragraph-en-5.532
5.532 And analogously: not “(∃x, y) . f(x, y) . x = y”, but “(∃x) . f(x, x)”; and not “(∃x, y) . f(x, y) . ~x = y” but “(∃x, y) . f(x, y)”.
(Therefore instead of Russell’s “(∃x, y) . f(x, y)”: “(∃x, y) . f(x, y) . ∨ . (∃x) . f(x, x)”.)