Combining Texts
Ideas for
'Lectures 1930-32 (student notes)', 'Philosophy of Mathematics' and 'Phil of Mathematics: why nothing works'
expand these ideas
|
start again
|
choose
another area for these texts
display all the ideas for this combination of texts
9 ideas
5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic
18724
|
In logic nothing is hidden [Wittgenstein]
|
5. Theory of Logic / C. Ontology of Logic / 4. Logic by Convention
18709
|
Laws of logic are like laws of chess - if you change them, it's just a different game [Wittgenstein]
|
5. Theory of Logic / D. Assumptions for Logic / 2. Excluded Middle
9605
|
If a proposition is false, then its negation is true [Brown,JR]
|
5. Theory of Logic / D. Assumptions for Logic / 3. Contradiction
18736
|
Contradiction is between two rules, not between rule and reality [Wittgenstein]
|
5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / c. not
18723
|
We may correctly use 'not' without making the rule explicit [Wittgenstein]
|
5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / d. and
18718
|
Saying 'and' has meaning is just saying it works in a sentence [Wittgenstein]
|
5. Theory of Logic / F. Referring in Logic / 1. Naming / a. Names
18727
|
A person's name doesn't mean their body; bodies don't sit down, and their existence can be denied [Wittgenstein]
|
5. Theory of Logic / K. Features of Logics / 1. Axiomatisation
9649
|
Axioms are either self-evident, or stipulations, or fallible attempts [Brown,JR]
|
5. Theory of Logic / L. Paradox / 4. Paradoxes in Logic / c. Berry's paradox
9638
|
Berry's Paradox finds a contradiction in the naming of huge numbers [Brown,JR]
|