File: BA-Sheffer.demods

package info (click to toggle)
prover9-manual 0.0.200902a-2.1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm, bullseye
  • size: 4,272 kB
  • sloc: xml: 212; csh: 144; python: 73; makefile: 42; perl: 10; sh: 1
file content (13 lines) | stat: -rw-r--r-- 336 bytes parent folder | download | duplicates (4) 
1
2
3
4
5
6
7
8
9
10
11
12
13
 
% Note that writing a basis of a variety to another set of operations
% does not necessarily give a basis for the variety in the other
% set of operations.

formulas(demodulators).

  % Meet, join, and complementation in terms of the Sheffer Stroke.

  x v y = f(f(x,x),f(y,y)).
  x ^ y = f(f(x,y),f(x,y)).
  x' = f(x,x).

end_of_list.