2.与其他运算符的组合:可以与“and”、“or”、“implies”等布尔运算符结合使用,构成更复杂的逻辑表达式。 四、实际案例分析 案例1:判断一个命题是否为真 假设有一个命题P:今天下雨。我们可以使用“not”运算符对其进行否定,得到P:今天不下雨。 案例2:判断一个复合命题的真假 假设有一个复合命题Q:今天下雨且明...
implication satisfying "Aristotle's Thesis" (p does not imply not p) and "Weak Boethius' Thesis" (if p implies q, then p does not imply not q)... C Pizzi,T Williamson - 《Journal of Philosophical Logic》 被引量: 34发表: 1997年 On Restricted Weak Type (1, 1) On restricted weak...
I argue for a version of "ought" implies "can". In particular, I argue that it is necessarily true that if an agent, S, ultima facie ought to do A at T', then there is a time T* such that S can at T* do A at T'. In support of this principle, I have argued that ...
We have organised and examined behavioural predictors for COVID-19 protective behaviour using partial least square structural equation modelling (PLS-SEM). Our research design also includes a parallel examination of climate protective behaviour. Not only is the actual change in individual behaviour insuff...
not necessarily— 不一定 · 未必 · 不必 · 未必见得 · 不见得 · 无须 · 未始 · 未尝 not so— 不然 necessarily副— 必副 · 一定副 · 未必副 · 必然副 · 必须副 · 定当副 better— 更好副 · 更好的形 · 更佳形 ·
It is not particularly reassuring to read that the concept of human security implies an “expanded paradigm of security” ( A/64/701, para. 9) daccess-ods.un.org 读到人的安全概念意味着“扩展的安全模式” (A/64/701,第 9 段),人们感到不是特别放心。 daccess-ods.un.org [...] per...
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aIt follows from (4.4) that the condition p > q implies CV2(R) > CV2(T) 它跟随从(4.4)情况p > q暗示CV2 (R) > CV2 (T)[translate] a请输入您需要翻译My English is very poor sorry 的文本! Please input you to need to translate My English is very poor sorry the text![translate] ...
1. {eq}(p \rightarrow q) \vee (p \rightarrow \not q) {/eq} 2. {eq}(\not p \rightarrow q) \vee (p \rightarrow q){/eq}. is a tautology? Tautological Statements and Truth Tables: We build the truth table for ...