Cartan–Hadamard conjecture

Source placement record

Cartan–Hadamard conjecture: can the classical isoperimetric inequality for subsets of Euclidean space be extended to spaces of nonpositive curvature, known as Cartan–Hadamard manifolds?

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Source status: Open
Field: Geometry · Differential geometry
Record type: Revision-pinned source placement
Verification: Source-index reviewed
Source grade: secondary
Reviewed: 2026-07-27T18:04:33.834Z

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Source trail

Wikipedia list subsection — Exact Geometry › Differential geometry subsection in the revision-pinned source.
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Pinned source revision 1366281547 — Revision-pinned snapshot from 7/27/2026.