Martin Pinsonnault

collaborators

4 papers

math.SG2026

Embedding more than 8 symplectic balls in $C P^{2}$

SÃlvia Anjos, Jarek KÄdra, Martin Pinsonnault

We prove that the space of symplectic embeddings of $n \geq 1$ standard balls into the standard complex projective plane $C P^{2}$ , normalized so that a line has symp…

math.SG2025

Centralizers of Hamiltonian finite cyclic group actions on rational ruled surfaces

Pranav V. Chakravarthy, Martin Pinsonnault

Let $M = (M, I ¨ )$ be either the product $S^{2} \times S^{2}$ or the non-trivial $S^{2}$ bundle over $S^{2}$ endowed with any symplectic form $I ¨ $ . Suppose a finite cyclic group $Z_{n}$ is acting…

math.SG2025

Centralizers of Hamiltonian circle actions on rational ruled surfaces

Pranav Chakravarthy, Martin Pinsonnault

In this paper, we compute the homotopy type of the group of equivariant symplectomorphisms of $S^{2} \times S^{2}$ and $C P^{2} # C P^{2}$ under the presence of…

math.SG2025

J-tamed inflation via tame to compatible deformations

Pranav Chakravarthy, Jordan Payette, Martin Pinsonnault

We give a complete and self-contained exposition of the $J$ -tame inflation lemma: Given any tame almost complex structure $J$ on a symplectic $4$ -manifold $(M, I ¨ )$ , and given any c…

Embedding more than 8 symplectic balls in CP2

Centralizers of Hamiltonian finite cyclic group actions on rational ruled surfaces

Centralizers of Hamiltonian circle actions on rational ruled surfaces

J-tamed inflation via tame to compatible deformations

Embedding more than 8 symplectic balls in $C P^{2}$