Proper noun
English Wikipedia has an article on:HestenesWikipedia
Hestenes
A surname.
David Hestenes reinterpreted the Pauli and Dirac matrices as vectors in ordinary space and spacetime, respectively, and has been a primary contemporary advocate for the use of geometric algebra. Source: Internet
Many authors use the same symbol as for the inner product of vectors for their chosen extension (e.g. Hestenes and Perwass). Source: Internet
Perwass also claims here that David Hestenes coined the term "versor", where he is presumably is referring to the GA context (the term versor appears to have been used by Hamilton to refer to an equivalent object of the quaternion algebra). Source: Internet