题目

英语翻译
1.D(x),F(x)分别代表：“x是一只狗”和“x是毛皮”.A代表所有的动物.
求用逻辑谓词翻译下列句子：“不是所有狗都是皮毛”和“有一些狗不是皮毛”
2.现有如下谓词：
g(x,y):x大于y
e(x,y):x=y
sum(x,y,z):x+y=z
prod(x,y,z):x的y倍等于z.
和定义域 自然数N.
翻译一下句子：
a) 所有5的倍数大于7.
b)存在一个奇数的自然数.
c)任意自然数相加是可交换的.
d)不是所有的自然数都是2的倍数.
3.用逻辑谓词翻译一下句子：并证明或者反驳该陈诉.
a）存在三个非零整数,前两个的平方和和等于第三个的平方.
b）存在三个非零整数,前两个的立方和等于第三个的立方.

提问时间：2021-01-24

答案

1.D ( x ),F ( x ) represent respectively:" x is a dog" and" x is fur".The A represents all the animal.
Ask use logic predicate to translate the following sentence:" not all dogs are fur" and" some dog 's fur"
2 the following predicate:
G ( x,y ):x greater than y
E ( x,y ):x = y
Sum ( x,y,z ):x+y = Z
Prod ( x,y,z ):x y is equal to Z times.
And defining the domain of natural number N.
Translate the sentence:
A ) all multiples of 5 is greater than 7.
B ) has an odd number of natural number.
C ) arbitrary natural number addition is commutative.
D ) not all natural numbers are multiples of 2.
3 logical predicates and translate the sentence:to prove or disprove the report.
A ) the existence of three non-zero integer,the first two of the square and the square is equal to third.
B ) the existence of three non-zero integer,the first two cubic and equal to third cubic.