Domain Arrivals
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Featured in Domain Arrivals · 2026-08-12

Stephen J. Pursey’s Mathematics of Hidden Cavities

stephenpursey.com ↗ · Personal Pages · score 86.0
○Open: public page gives enough substance to understand the site $Paid: pricing, booking, ecommerce, subscription, or paid access is visible ADAds: visible ad load or ad-supported content ✦Pretty: notable design, copy, craft, or presentation ◆Pro: polished, finished-feeling, serious, or operationally mature ◇Niche: specific audience, workflow, or unusually focused use case ◉Human: personal, local, community, civic, handmade, or real-person signal !Suspicious: scammy, spammy, trust theater, finance fog, or credibility concern

A Lakewood, Ohio hobbyist documents computational work on polycubes that enclose internal cavities.

Why it surfaced

The site turns a highly specific mathematical obsession into an inviting public project: an interactive eleven-cube challenge, six OEIS-related questions, and an enumeration result of exactly 384 minimal builds. Its candid voice—“I hated math as a kid”—makes the research feel unusually personal and approachable.

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Ice Does Not Count

August 12’s newborn domains include a rule-bound archive of enormous sodas, 27 family stories cut from one afternoon, a disaster-supply map with a 24-hour freshness rule, and an ocean bell that rings only when six conditions agree.

This is one of 1,000 discoveries in the 2026-08-12 Domain Arrivals issue.

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 JUN K Photography: At the Edge of Night jun-k-photography.com

A Japanese-English photography archive about night landscapes, earth traces, remote islands, caves, and the meeting point between terrestrial forms and cosmic light.