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- 逻辑学蕴涵命题中的「→」和数学中的「⇒」有什么区别和共同点？ - 知乎
逻辑学蕴涵命题中的「→」和数学中的「⇒」有什么区别和共同点？ 本人高中生，并且在自学逻辑中 显示全部 关注者 80
- Difference between implies and turnstile symbols (→ and ⊢)
So this would imply to me that → and ⊢ are equivalent, but it's idiomatic to use ⊢ for metamathematics, and → otherwise Or, more concretely: (A → B) → (C → D) is the same as (A → B) ⊢ (C → D), but the second option is considered more idiomatic readable as we differentiate the smaller connections from the larger ones
- How to make a formal proof with A → (B ∨ C) ⊢ (A → B) ∨ (A → C)
Here is what I've got so far: I feel like I need an indirect proof for this and so I need to prove a contradiction with one of line 4 or 5 I'm not sure how to approach it Any hints that can help
- discrete mathematics - Prove or disprove (p→q)→r and p→ (q→r) are . . .
I was able to show using a truth table that the two statements (p→q)→r and p→(q→r) are NOT equivalent, I need to now verify using equivalence laws, and I'm stuck Any guidance would be very appreci
- logic - How can I prove that (p→q)∧ (p→r) ⇔ p→ (q∧r) - Mathematics . . .
How can I prove that (p→q)∧(p→r) compound statements and compound statement p→(q∧r) are logically equivalent? And can I use logical equivalences on this proof?
- How to prove that $ [ (p→q)∧ (q→r)]→ (p→r)$ is a tautology without . . .
How to prove that $ [ (p→q)∧ (q→r)]→ (p→r)$ is a tautology without using a truth table? Ask Question Asked 1 year, 9 months ago Modified 1 year, 9 months ago
- In Logic is ⇒, →, and ⊃ basically the same symbol?
I need to create a few truth tables and I got confused by the logic symbols as some of the questions use either one or the other which is really confusing especially if they all mean the same thing
- A→ B为假 是否等价于 A→非B为真？ - 知乎
弄清这个问题需要2个步骤。 第一个步骤：符号→（或者说 A→ B ）是什么意思？ 凡是用生活中的例子去解释→的，可以说都是错误的、误导人的。 →是什么意思，详见我的回答： 真值表中的箭头是什么意思？ 弄清→的定义之后，就能知道（A→ B）为假，等价于 A且 非B，而不是 A→非B。 第二个
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