activity
20172025
most citedKnot traces and concordance

25 citations · 53 across the 12 of their papers we have counts for

collaborators

15 papers

math.GT2025

Dehn surgery functions are never injective

Kyle Hayden, Lisa Piccirillo, Laura Wakelin

We prove that, for each fixed rational number , there exists a pair of distinct knots whose -surgeries are orientation-preservingly homeomorphic. This conf…

math.GT2025

Distinguishing closed 4-manifolds by slicing

Tye Lidman, Lisa Piccirillo

One approach to produce a pair of homeomorphic-but-not-diffeomophic closed 4-manifolds is to find a knot which is smoothly slice in one but not the other. This approach has never b…

math.GT2025

Stably irreducible non-orientable knotted surfaces

Tye Lidman, Lisa Piccirillo

We give an elementary obstruction to reducibility for knotted surfaces in the four-sphere. As a new application, we construct stably irreducible non-orientable surfaces.

math.GT2023★ 1 cited

New constructions and invariants of closed exotic 4-manifolds

Adam Simon Levine, Tye Lidman, Lisa Piccirillo

In this article, we give new means of constructing and distinguishing closed exotic four-manifolds. Using Heegaard Floer homology, we define new closed four-manifold invariants tha…

math.GT2023

Small symplectic caps and embeddings of homology balls in the complex projective plane

John B. Etnyre, Hyunki Min, Lisa Piccirillo +1

We present a handlebody construction of small symplectic caps, and hence of small closed symplectic 4-manifolds. We use this to construct handlebody descriptions of symplectic embe…

math.GT2022★ 2 cited

-manifolds with boundary and fundamental group

Anthony Conway, Lisa Piccirillo, Mark Powell

We classify topological -manifolds with boundary and fundamental group , under some assumptions on the boundary. We apply this to classify surfaces in simply-connect…

math.GT2021★ 1 cited

From zero surgeries to candidates for exotic definite four-manifolds

Ciprian Manolescu, Lisa Piccirillo

One strategy for distinguishing smooth structures on closed -manifolds is to produce a knot in that is slice in one smooth filling of but not slice in some h…

math.GT2020★ 7 cited

Relative genus bounds in indefinite four-manifolds

Ciprian Manolescu, Marco Marengon, Lisa Piccirillo

Given a closed four-manifold with an indefinite intersection form, we consider smoothly embedded surfaces in int, with boundary a knot . We…

math.GT2020

New curiosities in the menagerie of corks

Kyle Hayden, Lisa Piccirillo

A cork is a smooth, contractible, oriented, compact 4-manifold together with a self-diffeomorphism of the boundary 3-manifold that cannot extend to a self-diffeomorphism of…

math.GT2019★ 5 cited

The trace embedding lemma and spinelessness

Kyle Hayden, Lisa Piccirillo

We demonstrate new applications of the trace embedding lemma to the study of piecewise-linear surfaces and the detection of exotic phenomena in dimension four. We provide infinitel…

math.GT2019

Exotic Mazur manifolds and knot trace invariants

Kyle Hayden, Thomas E. Mark, Lisa Piccirillo

From a handlebody-theoretic perspective, the simplest compact, contractible 4-manifolds, other than the 4-ball, are Mazur manifolds. We produce the first pairs of Mazur manifolds t…

math.GT2018★ 1 cited

The Conway knot is not slice

Lisa Piccirillo

A knot is said to be slice if it bounds a smooth properly embedded disk in the 4-ball. We demonstrate that the Conway knot, 11n34 in the Rolfsen tables, is not slice. This complete…

math.GT2018★ 11 cited

Shake genus and slice genus

Lisa Piccirillo

An important difference between high dimensional smooth manifolds and smooth 4-manifolds that in a 4-manifold it is not always possible to represent every middle dimensional homolo…

math.GT2017

On the Stein framing number of a knot

Thomas E. Mark, Lisa Piccirillo, Faramarz Vafaee

For an integer , write for the 4-manifold obtained by attaching a 2-handle to the 4-ball along the knot with framing . It is known that if $n< \overli…

math.GT2017★ 25 cited

Knot traces and concordance

Allison N. Miller, Lisa Piccirillo

We give a method for constructing many pairs of distinct knots and such that the two 4-manifolds obtained by attaching a 2-handle to along with framing zero…