3 papers
math.GT2025
Thurston's jiggling
Anna Fokma
In the 1970s Thurston introduced a technique known as ``jiggling'' which brings any triangulation into general position (a stronger version of transversality) by subdividing and pe…
math.GT2025
Jiggling: an h-principle without homotopical assumptions
Anna Fokma, Álvaro del Pino, Lauran Toussaint
The jiggling lemma of Thurston shows that any triangulation can be jiggled (read: subdivided and then perturbed) to be in general position with respect to a distribution. Our main…
math.GT2023
Wrinkling and Haefliger structures
Anna Fokma, Álvaro del Pino, Lauran Toussaint
Wrinkling techniques, introduced by Eliashberg and Mishachev, are typically used to prove h-principles of the form: ``formal solutions of a partial differential relation $\mathcal{…