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The McKendrick–von Foerster equation is a linear first-order partial differential equation encountered in several areas of mathematical biology – for example, demography [1] and cell proliferation modeling; it is applied when age structure is an important feature in the mathematical model. [2]
Heinz von Foerster argued that humanity's abilities to construct societies, civilizations and technologies do not result in self-inhibition. Rather, societies' success varies directly with population size. Von Foerster found that this model fits some 25 data points from the birth of Jesus to 1958, with only 7% of the variance left
Heinz von Foerster (né von Förster; November 13, 1911 – October 2, 2002) was an Austrian-American scientist combining physics and philosophy, and widely attributed as the originator of second-order cybernetics.
Created Date: 8/30/2012 4:52:52 PM
For example, the equation y 2 − x 3 = 0 defines a curve that has a cusp at the origin x = y = 0. One could define the x-axis as a tangent at this point, but this definition can not be the same as the definition at other points. In fact, in this case, the x-axis is a "double tangent."
Ostensibly a work of formal mathematics and philosophy, LoF became something of a cult classic: it was praised by Heinz von Foerster when he reviewed it for the Whole Earth Catalog. [5] Those who agree point to LoF as embodying an enigmatic "mathematics of consciousness ", its algebraic symbolism capturing an (perhaps even "the") implicit root ...
Foerster, Heinz von. Observing Systems. Seaside, California: Intersystems Publications, 1981. OCLC 263576422; Foerster, Heinz von, Albert Müller, and Karl H. Müller. The Beginning of Heaven and Earth Has No Name: Seven Days with Second-Order Cybernetics. Translated by Elinor Rooks and Michael Kasenbacher. New York: Fordham University Press, 2014.
Radical constructivism was initially formulated by Ernst von Glasersfeld, who drew on the work of Jean Piaget, Giambattista Vico, and George Berkeley amongst others. [6] [7] Radical constructivism is closely related to second-order cybernetics, [8] and especially the work of Heinz von Foerster, Humberto Maturana, and Francisco Varela.