activity
19952025
most citedComplexity results for CR mappings between spheres

25 citations · 92 across the 22 of their papers we have counts for

collaborators

22 papers

math.CV2025

Invariant polynomials, gaps, and sparseness

John P. D'Angelo, Dusty E. Grundmeier, Daniel A. Lichtblau

We consider each of the three classes of representations of cyclic groups that arise in the study of rational sphere maps. We study the possible number of terms for invariant polyn…

math.NT2022

Integer Sequences and Output Arrays

John P. D'Angelo, Jiri Lebl

The first author recently introduced an integer sequence now numbered A355519 in OEIS. This sequence arose from counting bracket tournaments; its study evokes the analysis of the C…

math.CV2019★ 6 cited

Rational sphere maps, linear programming, and compressed sensing

John P. D'Angelo, Dusty Grundmeier, Jiri Lebl

We develop a link between degree estimates for rational sphere maps and compressed sensing. We provide several new ideas and many examples, both old and new, that amplify connectio…

math.CV2017

Symmetries and regularity for holomorphic maps between balls

John P. D'Angelo, Ming Xiao

Let be a holomorphic map. We study subgroups and . When is…

math.CV2017

A remark on finite type conditions

John P. D'Angelo

We prove that a certain positivity condition, considerably more general than pseudoconvexity, enables one to conclude that the regular order of contact and singular order of contac…

math.CV2017★ 1 cited

On the classification of rational sphere maps

John P. D'Angelo

We prove a new classification result for (CR) rational maps from the unit sphere in some to the unit sphere in . To so so, we work at the level of He…