Hessenberg natural sum

The Hessenberg natural sum aligns equal exponents in two Cantor normal forms and adds their finite coefficients; unlike ordinal addition it is commutative.

Table of contents 71 2
- Shuffle bound for ordinal partitions Hessenberg natural sum 48 1
  - Ordinal partition bound Shuffle bound for ordinal partitions 27

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Ordinal
Set theory
Foundations of mathematics
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