A Primer of Logic
A Primer of Logic
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In our eReader you can find the full English version of the book. Read A Primer of Logic Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book A Primer of Logic
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In the propositions, x / y, x//y, and x///y, x is called the inferior, y the superior form.
Since x and y may take on any of the four forms a, /3, 7, e, there will be sixteen possible propositions of each type, x / y, x //y and x///y, obtained by permuting the letters two at a time and by taking each letter once with itself. The following postulates and principles will yield all the valid moods of each type. We have assumed four principles here because the principles for the deduction of the in...valid moods may be derived from these four as theorems.
Principles: i. (x / y) (y //z) Z (x///z) iii. (x / z) (y///z) Z (y //x) ii. (x / y) (z //x) Z (z///y) iv. (x / z) (y // z) Z (y / x) Postulates: /3/a; 6/7; 7//a.
Theorems: 7/0; e//0; e///a.
APRIMER OF LOGIC w We may also formulate rules for the derivation of the moods. It will then be necessary to assume one pos- tulate only.
Definition: In the propositions, x / y, x //y and x///y, the relation connecting x and y is known as the worse-relation.
What to read after A Primer of Logic?
You can find similar books in the "Read Also" column, or choose other free books by Henry Bradford Smith to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
In the propositions, x / y, x//y, and x///y, x is called the inferior, y the superior form.
Since x and y may take on any of the four forms a, /3, 7, e, there will be sixteen possible propositions of each type, x / y, x //y and x///y, obtained by permuting the letters two at a time and by taking each letter once with itself. The following postulates and principles will yield all the valid moods of each type. We have assumed four principles here because the principles for the deduction of the in...valid moods may be derived from these four as theorems.
Principles: i. (x / y) (y //z) Z (x///z) iii. (x / z) (y///z) Z (y //x) ii. (x / y) (z //x) Z (z///y) iv. (x / z) (y // z) Z (y / x) Postulates: /3/a; 6/7; 7//a.
Theorems: 7/0; e//0; e///a.
APRIMER OF LOGIC w We may also formulate rules for the derivation of the moods. It will then be necessary to assume one pos- tulate only.
Definition: In the propositions, x / y, x //y and x///y, the relation connecting x and y is known as the worse-relation.
What to read after A Primer of Logic?
You can find similar books in the "Read Also" column, or choose other free books by Henry Bradford Smith to read onlineMoreLess
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