what are the symbols '-dayu' and ' xiaoyu - dayu' stand for in substitution
what are the symbols '-> and <->' stand for in substitution
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Created by Gladys Xing on Aug 24, 2015
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Purpose: For explaning the meaning of both 2 symbols
1) For the first symbol '→', it is mathematically speaking an implication operator.
Statement A → Statement B means (A/B could be a statement like (Posting DATE < current date)
- IF A is true and B is true then the result is true
- IF A is false and B is false then the result is true
- IF A is true and B is false then the result is false
- IF A is false and B is true then the result is true
2) For the second symbol '↔', it is mathematically speaking an equivalence
- IF A is true and B is true then the result is true
- IF A is false and B is false then the result is true
- IF A is true and B is false then the result is false
- IF A is false and B is true then the result is false
