scispace - formally typeset
D

Dennis L. Johnson

Researcher at San Jose State University

Publications -  3
Citations -  2

Dennis L. Johnson is an academic researcher from San Jose State University. The author has contributed to research in topics: Cubic plane curve & Isogonal figure. The author has an hindex of 1, co-authored 3 publications receiving 2 citations.

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All cubics are self-isogonal

Roger C. Alperin, +1 more
- 01 Aug 2014 - 
TL;DR: In this paper, it was shown that a cubic curve is invariant under the isogonal transformation of the projective plane determined by some triangle, which is the case for all cubic curves.
Journal ArticleDOI

Pivot-isogonal cubics

Roger C. Alperin, +1 more
TL;DR: In this article, the authors prove that circular cubics are pivotal and self-isogonal, which is a property of pivotal cubics related to the isogonal transformation.
Journal ArticleDOI

All cubics are self-isotomic

Roger C. Alperin, +1 more
- 01 Dec 2016 - 
TL;DR: In this paper, it was shown that all cubics are self-isotomic, i.e., they are not self-convex or self-dual.