Changes

* [http://www.lawsofform.org/aum/session1.html Spencer-Brown's talks at Esalen 1973] — Self-referential forms are introduced in the section entitled "Degree of Equations and the Theory of Types"

* [http://www.lawsofform.org/aum/session1.html Spencer-Brown's talks at Esalen 1973] — Self-referential forms are introduced in the section entitled "Degree of Equations and the Theory of Types"

* [http://www.math.uic.edu/~kauffman/ Louis H. Kauffman] — ''[http://www.math.uic.edu/~kauffman/Arithmetic.htm Box Algebra, Boundary Mathematics, Logic, and Laws of Form]''

* [http://www.math.uic.edu/~kauffman/ Louis H. Kauffman] — ''[http://www.math.uic.edu/~kauffman/Arithmetic.htm Box Algebra, Boundary Mathematics, Logic, and Laws of Form]''

[[Category:Combinatorics]]

[[Category:Combinatorics]]

[[Category:Formal Systems]]

[[Category:Formal Systems]]

[[Category:Graph Theory]]

[[Category:Graph Theory]]

[[Category:Logic]]

[[Category:Logic]]

[[Category:Mathematics]]

[[Category:Mathematics]]

[[Category:Semiotics]]

[[Category:Semiotics]]

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[[Category:Visualization]]