R.V. Kadison defined the notion of local derivation on an algebra and proved that every continuous local derivation on a von Neumann algebra is a derivation (Kadison 1990). We provide the analogous result in the setting of Jordan triples.
@article{arxiv.1207.5394,
title = {Local Derivations on Jordan Triples},
author = {Michael Mackey},
journal= {arXiv preprint arXiv:1207.5394},
year = {2016}
}