'Fano plane' diaporamas de présentation

Motivation

Motivation. 5. Example 1: Fano configuration (projective plane). 6. 7. 3. 1. 4. 2. Exercises. N1: Determina all lines passing through the point 3 of Fano plane. N2: How many lines pass through 4 and 6? N3: How many lines pass through 1, 2, 3?

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E8 Number Indexed by Clifford/Pascal Order

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COMBINATORIAL CONFIGURATIONS

COMBINATORIAL CONFIGURATIONS. Incidence structure. An incidence structure C is a triple C = (P, L ,I) where P is the set of points, L is the set of blocks or lines I ? P ? L is an inciden ce relation . Elements from I are called flags .

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