Abstraction.
“The fewer the properties, attributes, traits, or characters of elements which are considered, the higher the ‘abstraction level’ of the group (Hayakawa, 1964).”
via: Rypka, E. W. (1971). Truth table classification and identification.
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“The abstraction of the group may be represented by a symbol, a common noun, or a naming word. Psychologists
may consider classification in terms of concept learning (Hunt, 1962), logicidns and mathematicians in terms of symbolic logic (Styazhkin, 1969) and set theory (Zermelo,
1908), and biologists in terms of evolution. “
Rypka, E. W. (1971). Truth table classification and identification.
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