Zena Chiara Masud

The Empirical Mind: Exact Sciences & Technology Auction

Extremely rare document by Jean Leray (1950) concerning his foundational work on the birth of the spectral sequence, a major discovery that revolutionized modern topology. It is an author’s copy of of capital historical importance.
Provenance: Original academic collection bearing the characteristic marks of the mathematician Jean Leray's working fonds (pencil handwritten signatures and dedications by attributed peers). This volume also bears the declassified stamps, witnesses of the academic and institutional exchanges of the time. Lot sold as is, the signatures and historical provenance being offered as "attributed" according to the visible material elements.
Signatures & Marks: Presence of a handwritten signature attributed to Jean Leray.

Rarissime document de Jean Leray (1950) portant sur ses travaux fondateurs concernant la naissance de la suite spectrale, une découverte majeure qui a révolutionné la topologie moderne. Il s'agit d'un exemplaire d'auteur d'une importance historique capitale.
Provenance : Ensemble d'origine académique portant les marques caractéristiques du fonds de travail du mathématicien Jean Leray (signatures manuscrites au crayon et dédicaces de pairs attribuées). Ce volume porte également le tampons déclassé , témoins des échanges académiques et institutionnels de l'époque. Lot vendu en l'état, les signatures et la provenance historique étant proposées comme "attribuées" d'après les éléments matériels visibles.
Signatures & Marques : Présence d'une signature manuscrite attribuée à Jean Leray.

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Signed; Jean Leray - Naissance de la suite spectrale au Collège de France - 1950

Mathematics - Quantity: 1 - Reference book

Belgium

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Signed by Jean Leray, this 1950 first edition in French from Gauthier-Villars is a 139-page soft‑cover work titled Naissance de la suite spectrale au Collège de France, a rare author copy with an attributed Jean Leray signature and academic provenance.

Signed; Jean Leray - Naissance de la suite spectrale au Collège de France - 1950

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Signed by Jean Leray, this 1950 first edition in French from Gauthier-Villars is a 139-page soft‑cover work titled Naissance de la suite spectrale au Collège de France, a rare author copy with an attributed Jean Leray signature and academic provenance.

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