NEWS FROM THE OBSERVATORY
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New articles, visual journeys and checked mathematics from Christopher Yamba.
The beauty of cancellation
A visual journey from a three-bead coloring puzzle to the Lean-checked height-two theorem of Cho and Huh.
Partition stabilization and semigroup gaps for ternary Parikh matrices
Exact counting formulas for words with repeated letters, connecting ternary Parikh matrices to integer partitions and numerical-semigroup gaps.
Read the paper, proofs and diagrams →The Symmetry Architecture of Merkurius
Mirrored meter, motifs and the mathematics of a piano piece from 1996.
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