2.2.1.2.  Topology and Metric
2.2.1.3.  Relevant Measures
2.2.2.  Logic with a Difference

2.3.  Differential Calculus of Propositions
2.3.1.  Propositions and Differences
2.3.2.  Three Part Analogy
2.3.2.1.  Functional Representation
2.3.2.2.  Characteristic Relation
2.3.2.3.  Indicative Conversion
2.3.3.  Pragmatic Roles
2.3.3.1.  Flexible Roles and Suitable Models
2.3.3.2.  Functional Pragmatism
2.3.4.  Abstraction, Behavior, Consequence
2.3.4.1.  Axiomatic Abstraction
2.3.4.2.  Behavioral Coordination
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