Grassmann and Stiefel Varieties over Composition Algebras
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Beschreibung
This monograph deals with matrix manifolds, i.e., manifolds for which there is a natural representation of their elements as matrix arrays. Classical matrix manifolds (Stiefel, Grassmann and flag manifolds) are studied in a more general setting. It provides tools to investigate matrix varieties over Pythagorean formally real fields. The presentation of the book is reasonably self-contained. It contains a number of nontrivial results on matrix manifolds useful for people working not only in differential geometry and Riemannian geometry but in other areas of mathematics as well. It is also designed to be readable by a graduate student who has taken introductory courses in algebraic and differential geometry.
This monograph deals with matrix manifolds, i.e., manifolds for which there is a natural representation of their elements as matrix arrays. Classical matrix manifolds (Stiefel, Grassmann and flag manifolds) are studied in a more general setting. It provides tools to investigate matrix varieties over Pythagorean formally real fields. The presentation of the book is reasonably self-contained. It contains a number of nontrivial results on matrix manifolds useful for people working not only in differential geometry and Riemannian geometry but in other areas of mathematics as well. It is also designed to be readable by a graduate student who has taken introductory courses in algebraic and differential geometry.
Deals with matrix manifolds, i.e. manifolds for which there is a natural representation of the elements as matrix arrays Generalizes classical matrix manifolds (Stiefel, Grassmann and flag manifolds) to the above more general setting Provides tools to investigate matrix varieties over Pythagorean formally real fields
Autor*in
Marek Golasiński
Themen in »Grassmann and Stiefel Varieties over Composition Algebras«
Pythagorean Formally Real Field Hermitian Matrix Grassmann Manifold Stiefel Manifold Variety of Idempotent Matrices
Stimmen zu »Grassmann and Stiefel Varieties over Composition Algebras«
“A striking feature of the book is that elementary matrix calculus is sufficient to understand all the concepts and to carry out all the proofs, even the more involved ones, which makes it readily accessible to a wide audience … . This text remains a valuable source book for all those who seek a matrix approach to Stiefel/Grassmannian manifolds and/or need to generalize these manifolds to an arbitrary formally real Pythagorean field K.” (Giovanni Moreno, Mathematical Reviews, June, 2025)
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