17 ideas
13201 | ∈ says the whole set is in the other; ⊆ says the members of the subset are in the other [Enderton] |
13206 | A 'linear or total ordering' must be transitive and satisfy trichotomy [Enderton] |
13204 | The 'ordered pair' <x,y> is defined to be {{x}, {x,y}} [Enderton] |
13200 | Note that {Φ} =/= Φ, because Φ ∈ {Φ} but Φ ∉ Φ [Enderton] |
13199 | The empty set may look pointless, but many sets can be constructed from it [Enderton] |
13203 | The singleton is defined using the pairing axiom (as {x,x}) [Enderton] |
13202 | Fraenkel added Replacement, to give a theory of ordinal numbers [Enderton] |
13205 | We can only define functions if Choice tells us which items are involved [Enderton] |
5303 | For the proletariate, law, morality and religion are just expressions of bourgeois interests [Marx/Engels] |
21998 | Bourgeois interests create our morality, law and religion [Marx/Engels] |
7903 | The six perfections are giving, morality, patience, vigour, meditation, and wisdom [Nagarjuna] |
5302 | Modern governments are just bourgeois management committees [Marx/Engels] |
5304 | Communism aims to abolish not all property, but bourgeois property [Marx/Engels] |
5307 | Many of the bourgeois rights grievances are a form of self-defence [Marx/Engels] |
5306 | The free development of each should be the condition for the free development of all [Marx/Engels] |
5305 | Communists want to rescue education from the ruling class [Marx/Engels] |
5301 | The history of all existing society is the history of class struggles [Marx/Engels] |