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Online Encyclopedia of
Mathematical Models.






Models:

boolean algebras, lattices, directed sets, equivalence relations,
graphs, directed graphs, bipartite graphs,
pre-orderings, strict partial orders, strict weak orderings, partial orderings, weak orderings, total orderings,
groups, rings, fields, racks, quandles, Tarski's HS Algebra,
more coming soon.



Graphs.
Axioms

relation       R(2)

variable       x,y

axiom              ∀x ¬ Rxx              #antiReflexive

axiom              ∀x∀y Rxy ⟶ Ryx              #symmetric

Models
model 1_1
 R
   0
model 2_1
 R
   0 0
   0 0
model 2_2
 R
   0 1
   1 0
model 3_1
 R
   0 0 0
   0 0 0
   0 0 0
model 3_2
 R
   0 1 0
   1 0 0
   0 0 0
model 3_3
 R
   0 0 1
   0 0 0
   1 0 0
      



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