on 2014 May 17 8:47 AM
When i try to do substitution, we need to type some basic symbols like the SQL symbols, there are 2 symbols which my colleagues ask me how to use. -> and <-> , anyone know how to use these 2 so that i can share the knowledge with my team members. thanks
Hi Lei,
"→" is mathematically speaking an implication operator.
For example 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
↔ is mathematically an equivalence, meaning…
- 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
Hope above information is helpful for you.
Best Regards,
Gladys
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