Phrase guide

Riemannian manifold

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

A real, smooth differentiable manifold whose each point has a tangent space equipped with a positive-definite inner product;

Definition source: English Wiktionary via Wiktextract

Qualifier: differential geometry; Riemannian geometry; differential geometry; Riemannian geometry

Examples

  • By definition, a Riemannian manifold M has at each point p a tangent space T#95;pM equipped with a positive-definite inner product, g#95;p; information about these inner products is encoded in the Riemannian metric tensor, g.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A real, smooth differentiable manifold whose each point has a tangent space equipped with a positive-definite inner product; (more formally) an ordered pair (M, g), where M is a real, smooth differentiable manifold and g its Riemannian metric.

an ordered pair (M, g), where M is a real, smooth differentiable manifold and g its Riemannian metric.

Definition source: English Wiktionary via Wiktextract

Qualifier: differential geometry; Riemannian geometry; more formally

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Named after German mathematician Bernhard Riemann (1826–1866). See also Riemannian.

Across languages

Translations

8 source translations are retained for this English entry.

  • Bulgarian: риманово многообразие (rimanovo mnogoobrazie) — real, smooth differentiable manifold equipped with a Riemannian metric
  • French: variété riemannienne — real, smooth differentiable manifold equipped with a Riemannian metric
  • German: riemannsche Mannigfaltigkeit — real, smooth differentiable manifold equipped with a Riemannian metric
  • German: riemannscher Raum — real, smooth differentiable manifold equipped with a Riemannian metric
  • Italian: varietà riemanniana — real, smooth differentiable manifold equipped with a Riemannian metric
  • Polish: rozmaitość riemannowska — real, smooth differentiable manifold equipped with a Riemannian metric
  • Polish: przestrzeń Riemanna — real, smooth differentiable manifold equipped with a Riemannian metric
  • Russian: ри́маново многообра́зие (rímanovo mnogoobrázije) — real, smooth differentiable manifold equipped with a Riemannian metric