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909
Open
Frederik Wellmann
A. MS.
LOGIC (MS 339-1009)
A system of graphs using "curves convex inwards," and presumed to be an improvement over Euler's diagrams and logical algebra.
Eulerian Diagram, Graphs logical (see also Diagram Eulerian; Graphs), Logic (modal see Modality)
p. 1-10
u
481
n.p.
LOGIC / LOGICAL GRAPHS
yes
