Saturday 8 November 2014

Week Twelve

NB. Please don't get too caught up in Freges own invented notation: hardly anyone uses it anymore. Concentrate on the ideas.

1. What is a definition? What do you think, what did Frege think?
2. Frege launches yet another attack on psychologism in the passage we read this week. Are you convinced?
3. What is the extension of a concept?
4. Do sentences really refer to truth values? If they don't, what do they refer to?
5. What does Frege say on pg 210 about extension and sets? Do you agree?
6. Much of the preface is a summary of what Frege has already covered. Does he sound pessimistic? Why? Should he have been? Do you think its a fair summary?

And from last time, if we have the time:

1. Should totality have to apply to natural languages or just the concept script. Someone (Kenny? Paul?) said the problem reoccurs in mathematics as there are some functions which 'don't work' in certain domains (e.g. Non Eculdian geometry). What do people think of this?

2. Is Blanchette's definition of completeness circular? Does it matter?

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