Pith. sign in

REVIEW 1 cited by

Exotic diffeomorphisms on $4$-manifolds with $b_2^+ = 2$

Not yet reviewed by Pith; the record is open.

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 2409.07009 v1 pith:MDGUKFV6 submitted 2024-09-11 math.GT

classification math.GT
keywords diffeomorphismsexoticmathbbclosedmanifoldsadmitscasecomparing
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
abstract

While the exotic diffeomorphisms turned out to be very rich, we know much less about the $b^+_2 =2$ case, as parameterized gauge-theoretic invariants are not well defined. In this paper we present a method (that is, comparing the winding number of parameter families) to find exotic diffeomorphisms on simply-connected smooth closed $4$-manifolds with $b^+_2 =2$, and as a result we obtain that $2\mathbb{C}\mathbb{P}^2 \# 10 (-{\mathbb{C}\mathbb{P}^2})$ admits exotic diffeomorphisms. This is currently the smallest known example of a closed $4$-manifold that supports exotic diffeomorphisms.

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Families of diffeomorphisms, embeddings, and positive scalar curvature metrics via Seiberg-Witten theory

    math.GT 2025-01 accept novelty 7.0 of 10

    A new gluing theorem for parameterized Seiberg-Witten invariants gives infinite rank Z^∞ summands in higher homotopy and homology of diffeomorphism groups of 4-manifolds that are topologically trivial.

Pith tools