propositional

9/1/12

Skills to be acquired in this tutorial:

Symbolizing compound propositions. Learning about logical connectives, and the notion of the main connective. Recognizing different constructions in English which have the same underlying logical form. Paraphrasing the English into a standard form.

Why this is useful:

It is the next step in learning how to symbolize. Main connectives are very important-- they are central to symbolization, they are central to the semantics, and they are central to derivations.

8/2/08

Tutorial 1 Exercise 2

[What is shown below is a Quicktime Movie, with sound. Your computer should be able to run this. If you are having trouble, check with Quicktime or Quicktime download and equip your machine for viewing Quicktime. If you have external speakers, or similar, you may need to turn them on and turn the volume up.]

8/2/08

Tutorial 1 Exercise 2

[This is a film-- press the 'play' symbol.]

12/15/20

Indicative sentences in a natural language, English, for instance, are either true or false. For example, 'There are 35 State Governors in the U.S.A.' is an indicative sentence (which happens to be false). Such sentences express statements or propositions. Not all pieces of language express propositions. For example, the question 'What day is it today?' is not either true or false (although reasonable answers to it will be either true or false); again, the greeting 'Have a nice day!' is not either true or false.

7/31/08 10 Software

Skills to be acquired in this tutorial:

To become familiar with the notions of argument, valid, invalid, premise, and conclusion. To learn how to symbolize atomic sentences.

Reading

Bergmann[2004] The Logic Book Chapter 1

Tutorial:

The main role of logic is to assess arguments-- to say whether an individual argument is valid or whether it is invalid. In logic, arguments are taken to consist of two components--premises, and a conclusion.

For example,