Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Books Books 1 - 2 of 2 on No," most frequently means that he is the contrary of tall, or considerably under....  
" No," most frequently means that he is the contrary of tall, or considerably under the average. But it must be remembered, that, in all logical reasoning, the negation is simply negation, and nothing more, never implying affirmation of the contrary. "
First notions of logic, preparatory to the study of geometry - Page 5
by Augustus De Morgan - 1840
Full view - About this book

Formal logic: or, The Calculus of inference, necessary and probable

Augustus De Morgan - Logic, Symbolic and mathematical - 1847 - 336 pages
...under the average. ' But it muft be remembered, that, in all logical reafoning, the negation is fimply negation, and nothing more, never implying affirmation of the contrary. The common propofition that two negatives make an affirmative, is true only upon the fuppofition that there are...
Full view - About this book

Elementary notions of logic, designed as prolegomena to the study of geometry

Alfred Milnes - 1880
...frequently means that he is the contrary of tall, or considerably under the average. But it must be remembered that in all logical reasoning the negation...more, never implying affirmation of the contrary." * Now, it is plain that if we take a Universal Affirmative, we may oppose to it either a universal...
Full view - About this book




  1. My library
  2. Help
  3. Advanced Book Search
  4. Download PDF