A Zariski-Open Family of Proper Septic Polynomials with Full Traceless Images
Version 1 / Nov 10, 2026 / CC BY 4.0
Abstract
Let be an algebraically closed field of characteristic zero. We identify a -dimensional space of proper multilinear degree-seven polynomials in the third power of the commutator ideal, with zero formal cyclic trace and annihilated by every repeated-input identification of type . A nonempty Zariski-open subset of this space consists of polynomials whose sets of individual matrix values satisfy for every . The ambient proper and formal trace-zero spaces have dimensions and , respectively. An explicit polynomial certifies nonemptiness of this coefficient-open family. The proof combines a symmetric-group decomposition, exact finite determinant witnesses, an additive-size argument and a separate matrix argument.
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Version history
- v1 · 12 pagesSubmitted by Y. T. MiahInitial depositCurrentNov 08, 2026