27 ideas
10170 | While true-in-a-model seems relative, true-in-all-models seems not to be [Reck/Price] |
10166 | ZFC set theory has only 'pure' sets, without 'urelements' [Reck/Price] |
10175 | Three types of variable in second-order logic, for objects, functions, and predicates/sets [Reck/Price] |
13931 | By using aporiai as his start, Aristotle can defer to the wise, as well as to the many [Haslanger] |
10165 | 'Analysis' is the theory of the real numbers [Reck/Price] |
10174 | Mereological arithmetic needs infinite objects, and function definitions [Reck/Price] |
10164 | Peano Arithmetic can have three second-order axioms, plus '1' and 'successor' [Reck/Price] |
10172 | Set-theory gives a unified and an explicit basis for mathematics [Reck/Price] |
10167 | Structuralism emerged from abstract algebra, axioms, and set theory and its structures [Reck/Price] |
10169 | Relativist Structuralism just stipulates one successful model as its arithmetic [Reck/Price] |
10179 | There are 'particular' structures, and 'universal' structures (what the former have in common) [Reck/Price] |
10181 | Pattern Structuralism studies what isomorphic arithmetic models have in common [Reck/Price] |
10182 | There are Formalist, Relativist, Universalist and Pattern structuralism [Reck/Price] |
10168 | Formalist Structuralism says the ontology is vacuous, or formal, or inference relations [Reck/Price] |
10178 | Maybe we should talk of an infinity of 'possible' objects, to avoid arithmetic being vacuous [Reck/Price] |
10176 | Universalist Structuralism is based on generalised if-then claims, not one particular model [Reck/Price] |
10177 | Universalist Structuralism eliminates the base element, as a variable, which is then quantified out [Reck/Price] |
10171 | The existence of an infinite set is assumed by Relativist Structuralism [Reck/Price] |
13925 | Ontology disputes rest on more basic explanation disputes [Haslanger] |
10173 | A nominalist might avoid abstract objects by just appealing to mereological sums [Reck/Price] |
13924 | The persistence of objects seems to be needed if the past is to explain the present [Haslanger] |
13930 | Persistence makes change and its products intelligible [Haslanger] |
13927 | We must explain change amongst 'momentary entities', or else the world is inexplicable [Haslanger] |
13928 | If the things which exist prior to now are totally distinct, they need not have existed [Haslanger] |
13929 | Natural explanations give the causal interconnections [Haslanger] |
13926 | Best explanations, especially natural ones, need grounding, notably by persistent objects [Haslanger] |
8044 | Goffman sees the self as no more than a peg on which to hang roles we play [Goffman, by MacIntyre] |