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Annals of Mathematics Studies 76, Princeton University Press. Academic scan: www.maths.ed.ac.uk/~v1ranick/papers/milnstas.pdf

Chapter 15, Theorem 15.3: the total Pontryagin class product formula holds modulo elements of order two. Verified against the original-text transcription in the TeXromancers edition: aareyanmanzoor.github.io/assets/books/characteristic-classes.pdf

The original scan exceeds the web extractor size limit; the theorem statement and proof were read in the retypeset original text. Locate by theorem number because the retypeset pagination differs.

Primary lecture text: abel.math.harvard.edu/archive/118r_spring_05/docs/milnor.pdf

Archive record: arxiv.org/abs/math/9201272

Cited passages: sections 2–3, normality, Fatou/Julia sets and the squaring map; section 7, parabolic petals and basin definition; Appendix F, quadratic parameter space.

Princeton University Press book; inspected title page dates the edition 1963. Institutional scan: pagine.dm.unipi.it/~a019210/Milnor_Morse%20theory.pdf

Lemma 2.2 gives the exact smooth quadratic normal form and its completion-of-squares proof. Corollary 2.3 gives isolation of nondegenerate critical points and contrasts degenerate examples such as x cubed.