Symbolization Review admin Sat, 01/11/2014 - 01:50
Logical System


[The core of this is from Leblanc and Wisdom [1972] p.117 and f.]

Symbolization using the Universal Quantifier (of non relational English)

Tutorial 22: Symbolizing Relations admin Sat, 01/11/2014 - 01:50
Logical System


Tutorial 22 Symbolizing Relations.

The Tutorial

Thus far we have considered only 'monadic' predicates-- our atomic formulas consist of a predicate followed by only one term-- for example, Fx. But in English we regularly encounter dyadic predicates or relations. For example, 'Arthur is taller than Bert' cannot be symbolized with the tools we have used so far; what is needed is a relation to represent ' taller than ...' Txy, say, and then the proposition would be symbolized Tab.



Tutorial 11: Sketch of the second part of the course, and symbolizing sentences using predicate logic.

Logical System


Skills to be acquired in this tutorial:

To start learning how to symbolize sentences using predicate logic.

The Tutorial:

To symbolize at predicate logic level, entities like Beryl are symbolized by constant terms which are lower case letters from the beginning of the alphabet ('b' would be fine for Beryl) and properties are symbolized by upper case letters ('W' would be fine for ' wise'); and the two are put together by writing the property first followed by the individual it applies to. The result, using the conventions mentioned here, is

Supplementary: The Paradoxes of Material Implication admin Sat, 01/11/2014 - 01:50
Logical System


eg Lander or Suber

The problem or issue here lies with the truth table for the conditional (or material implication) ⊃

Review admin Sat, 01/11/2014 - 01:50
Logical System

There is the idea of setting up a code or convention or dictionary between atomic propositions and capital letters.

There are compound propositions, each of which has a main connective which connects its components.

There are five propositional logical connectives:

'∼' which translates back to 'it is not the case that...'

'&' which translates back to '... and ...'

'∨' which translates back to '... or ...'

'⊃' which translates back to 'if... then ...'

'≡' which translates back to '... if and only if ...'

Help with Tutorial 2 admin Sat, 01/11/2014 - 01:50
Logical System


Tutorial 2 Example: How Experts Symbolize

Your browser does not support html5 video.


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