On the embeddability of skeleta of manifold triangulations

We show a criterion for a skeleton of a manifold triangulation being embeddable into Euclidean space in terms of the complement of a submanifold. As an application, we obtain embeddability of a <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="left-parenthesis q minus 1 right-parenthesis"> <mml:semantics> <mml:mrow> <mml:mo stretchy="false">(</mml:mo> <mml:mi>q</mml:mi> <mml:mo> − </mml:mo> <mml:mn>1</mml:mn> <mml:mo stretchy="false">)</mml:mo> </mml:mrow> <mml:annotation encoding="application/x-tex">(q-1)</mml:annotation> </mml:semantics> </mml:math> </inline-formula> -skeleton of a triangulation of an <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper S Superscript p"> <mml:semantics> <mml:msup> <mml:mi>S</mml:mi> <mml:mi>p</mml:mi> </mml:msup> <mml:annotation encoding="application/x-tex">S^p</mml:annotation> </mml:semantics> </mml:math> </inline-formula> -bundle over <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper S Superscript q"> <mml:semantics> <mml:msup> <mml:mi>S</mml:mi> <mml:mi>q</mml:mi> </mml:msup> <mml:annotation encoding="application/x-tex">S^q</mml:annotation> </mml:semantics> </mml:math> </inline-formula> into <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="double-struck upper R Superscript p plus q"> <mml:semantics> <mml:msup> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi mathvariant="double-struck">R</mml:mi> </mml:mrow> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi>p</mml:mi> <mml:mo>+</mml:mo> <mml:mi>q</mml:mi> </mml:mrow> </mml:msup> <mml:annotation encoding="application/x-tex">\mathbb {R}^{p+q}</mml:annotation> </mml:semantics> </mml:math> </inline-formula> .

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Publication Details

Journal
Proceedings of the American Mathematical Society
Published
2026-02-09
DOI
https://doi.org/10.1090/proc/17559
Primary Topic
Geometric and Algebraic Topology
Type
article
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article

On the embeddability of skeleta of manifold triangulations

Takahiro Matsushita, Daisuke Kishimoto
Proceedings of the American Mathematical Society
Geometric and Algebraic Topology
article

On the embeddability of skeleta of manifold triangulations

Takahiro Matsushita, Daisuke Kishimoto
article en

Abstract

We show a criterion for a skeleton of a manifold triangulation being embeddable into Euclidean space in terms of the complement of a submanifold. As an application, we obtain embeddability of a <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="left-parenthesis q minus 1 right-parenthesis"> <mml:semantics> <mml:mrow> <mml:mo stretchy="false">(</mml:mo> <mml:mi>q</mml:mi> <mml:mo> − </mml:mo> <mml:mn>1</mml:mn> <mml:mo stretchy="false">)</mml:mo> </mml:mrow> <mml:annotation encoding="application/x-tex">(q-1)</mml:annotation> </mml:semantics> </mml:math> </inline-formula> -skeleton of a triangulation of an <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper S Superscript p"> <mml:semantics> <mml:msup> <mml:mi>S</mml:mi> <mml:mi>p</mml:mi> </mml:msup> <mml:annotation encoding="application/x-tex">S^p</mml:annotation> </mml:semantics> </mml:math> </inline-formula> -bundle over <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper S Superscript q"> <mml:semantics> <mml:msup> <mml:mi>S</mml:mi> <mml:mi>q</mml:mi> </mml:msup> <mml:annotation encoding="application/x-tex">S^q</mml:annotation> </mml:semantics> </mml:math> </inline-formula> into <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="double-struck upper R Superscript p plus q"> <mml:semantics> <mml:msup> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi mathvariant="double-struck">R</mml:mi> </mml:mrow> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi>p</mml:mi> <mml:mo>+</mml:mo> <mml:mi>q</mml:mi> </mml:mrow> </mml:msup> <mml:annotation encoding="application/x-tex">\mathbb {R}^{p+q}</mml:annotation> </mml:semantics> </mml:math> </inline-formula> .

Proceedings of the American Mathematical SocietyVol. 154(4)
Kyushu University (JP), Shinshu University (JP)
Openalex Percentile: Top 56%
Geometric and Algebraic Topology
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On the embeddability of skeleta of manifold triangulations — Takahiro Matsushita, Daisuke Kishimoto · Proceedings of the American Mathematical Society (2026) | TGRS Research Map | TGRS