Combining Philosophers

All the ideas for Eucleides, Michal Walicki and Max Weber

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32 ideas

2. Reason / A. Nature of Reason / 5. Objectivity
22366 There is no objectivity in social sciences - only viewpoints for selecting and organising data [Weber]
22367 The results of social research can be true, and not just subjectively valid for one person [Weber]
4. Formal Logic / B. Propositional Logic PL / 1. Propositional Logic
17749 Post proved the consistency of propositional logic in 1921 [Walicki]
17765 Propositional language can only relate statements as the same or as different [Walicki]
4. Formal Logic / B. Propositional Logic PL / 3. Truth Tables
17764 Boolean connectives are interpreted as functions on the set {1,0} [Walicki]
4. Formal Logic / F. Set Theory ST / 3. Types of Set / b. Empty (Null) Set
17752 The empty set is useful for defining sets by properties, when the members are not yet known [Walicki]
17753 The empty set avoids having to take special precautions in case members vanish [Walicki]
4. Formal Logic / F. Set Theory ST / 6. Ordering in Sets
17759 Ordinals play the central role in set theory, providing the model of well-ordering [Walicki]
5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic
17741 To determine the patterns in logic, one must identify its 'building blocks' [Walicki]
5. Theory of Logic / J. Model Theory in Logic / 1. Logical Models
17747 A 'model' of a theory specifies interpreting a language in a domain to make all theorems true [Walicki]
5. Theory of Logic / J. Model Theory in Logic / 3. Löwenheim-Skolem Theorems
17748 The L-S Theorem says no theory (even of reals) says more than a natural number theory [Walicki]
5. Theory of Logic / K. Features of Logics / 1. Axiomatisation
17761 A compact axiomatisation makes it possible to understand a field as a whole [Walicki]
17763 Axiomatic systems are purely syntactic, and do not presuppose any interpretation [Walicki]
6. Mathematics / A. Nature of Mathematics / 3. Nature of Numbers / e. Ordinal numbers
17755 Ordinals are the empty set, union with the singleton, and any arbitrary union of ordinals [Walicki]
17758 Ordinals are transitive sets of transitive sets; or transitive sets totally ordered by inclusion [Walicki]
17757 Members of ordinals are ordinals, and also subsets of ordinals [Walicki]
17756 The union of finite ordinals is the first 'limit ordinal'; 2ω is the second... [Walicki]
17760 Two infinite ordinals can represent a single infinite cardinal [Walicki]
6. Mathematics / B. Foundations for Mathematics / 3. Axioms for Geometry
17762 In non-Euclidean geometry, all Euclidean theorems are valid that avoid the fifth postulate [Walicki]
6. Mathematics / B. Foundations for Mathematics / 4. Axioms for Number / f. Mathematical induction
17754 Inductive proof depends on the choice of the ordering [Walicki]
10. Modality / A. Necessity / 2. Nature of Necessity
17742 Scotus based modality on semantic consistency, instead of on what the future could allow [Walicki]
14. Science / D. Explanation / 1. Explanation / d. Explaining people
7082 Nature requires causal explanations, but society requires clarification by reasons and motives [Weber, by Critchley]
19. Language / B. Reference / 1. Reference theories
1757 The Electra: she knows this man, but not that he is her brother [Eucleides, by Diog. Laertius]
22. Metaethics / A. Value / 1. Nature of Value / b. Fact and value
22155 We are disenchanted because we rely on science, which ignores values [Weber, by Boulter]
22. Metaethics / B. The Good / 1. Goodness / b. Types of good
3028 The chief good is unity, sometimes seen as prudence, or God, or intellect [Eucleides]
23. Ethics / D. Deontological Ethics / 2. Duty
20725 The idea of duty in one's calling haunts us, like a lost religion [Weber]
24. Political Theory / C. Ruling a State / 1. Social Power
21132 Domination is probable obedience by some group of persons [Weber]
24. Political Theory / D. Ideologies / 11. Capitalism
20722 Acquisition and low consumption lead to saving, investment, and increased wealth [Weber]
20724 When asceticism emerged from the monasteries, it helped to drive the modern economy [Weber]
20717 Capitalism is not unlimited greed, and may even be opposed to greed [Weber]
20718 Modern western capitalism has free labour, business separate from household, and book-keeping [Weber]
29. Religion / B. Monotheistic Religion / 4. Christianity / a. Christianity
20719 Punish the heretic, but be indulgent to the sinner [Weber]