S. Walters

activity

20002021

most citedThe structure of crossed products of irrational rotation algebras by finite subgroups of SL_2 (Z)

32 citations · 70 across the 13 of their papers we have counts for

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Showing 2020Show all

2 papers · 1 filter

math.OA2020★ 1 cited

Modular Images Of Approximately Central Projections

Samuel G. Walters

It is shown that for any approximately central (AC) projection $e$ in the Flip orbifold $A_{θ}^{Φ}$ (of the irrational rotation C*-algebra $A_{θ}$ ), and any modular automorphism $α$ (ari…

math.HO2020

A Proof Of Cantor's Theorem

Sam Walters

We present a short proof of Cantor's Theorem (circa 1870s): if $a_{n} cos n x + b_{n} sin n x \to 0$ for each $x$ in some (nonempty) open interval, where $a_{n}, b_{n}$ are sequences of co…