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Post Closed as "Duplicate" by Arm the good guys in America, bookmanu, jimm101, Scott - Слава Україні, Rory Alsop
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The use of ‘and’ after ‘where’ in a mathematical statement

The use of ‘and’ after ‘where’ in a mathematical statement

Which of the following is correct:

  • ... where c is a constant, f(.) is a monotonic function, x and y are random variable.
  • ... where c is a constant, f(.) is a monotonic function and x and y are random variable.

This always gets me confused. Because x and y are of one kind (I don’t know if that is the proper word) and there should be an ‘and’ in between, but I’m not about whether not I should write an ‘and’ before the phrase too because it is the last item in a list (I mean it’s like saying: I bought apples, oranges, and bananas.).

The use of ‘and’ after ‘where’

Which of the following is correct:

  • ... where c is a constant, f(.) is a monotonic function, x and y are random variable.
  • ... where c is a constant, f(.) is a monotonic function and x and y are random variable.

This always gets me confused. Because x and y are of one kind (I don’t know if that is the proper word) and there should be an ‘and’ in between, but I’m not about whether not I should write an ‘and’ before the phrase too because it is the last item in a list (I mean it’s like saying: I bought apples, oranges, and bananas.).

The use of ‘and’ after ‘where’ in a mathematical statement

Which of the following is correct:

  • ... where c is a constant, f(.) is a monotonic function, x and y are random variable.
  • ... where c is a constant, f(.) is a monotonic function and x and y are random variable.

This always gets me confused. Because x and y are of one kind (I don’t know if that is the proper word) and there should be an ‘and’ in between, but I’m not about whether not I should write an ‘and’ before the phrase too because it is the last item in a list (I mean it’s like saying: I bought apples, oranges, and bananas.).

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The use of ‘and’ after ‘where’

Which of the following is correct:

  • ... where c is a constant, f(.) is a monotonic function, x and y are random variable.
  • ... where c is a constant, f(.) is a monotonic function and x and y are random variable.

This always gets me confused. Because x and y are of one kind (I don’t know if that is the proper word) and there should be an ‘and’ in between, but I’m not about whether not I should write an ‘and’ before the phrase too because it is the last item in a list (I mean it’s like saying: I bought apples, oranges, and bananas.).