Research notes on every problem, and a library of the papers behind them. Built from the open erdos repository.
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Bloking sets in finite planes and spaces
Tamás Szőnyi, Bloking sets in finite planes and spaces, Ratio Mathematica 5 (1992), 93–106. The title retains the spelling printed in the paper and in the journal record.
The fourteen-page scanned article was obtained from the journal's PDF endpoint. The abstract and first-page introduction discuss blocking sets in higher finite dimensions, sets with few collinear points, and inversive planes. They contrast geometric constructions with probabilistic covering methods.
Bears on. The few-collinear-points part is a prospective literature source for Problem 1159's bounded line-intersection question. Only the abstract and first-page introduction have been read for this card; no theorem or proof is consumed here as a premise.
The journal record, read on 2026-10-16, expressly licenses this article under Creative Commons Attribution 4.0. It also displays a 1992 copyright notice naming Franco Eugeni. The explicit article license determines the recorded term.