Use of "the" to refer to named objects

Question

Dear All,In scientific/mathematical writing, for example:Let A be a molecule. A can be defined as ........Let B be a magnetic force ...........Let C be ....................The chemical properties of the molecule A can be .........I would like to know if the use of the underlined "the" required or not? I know that I can simply write sometime like: The chemical properties of A can be .........But, having many other symbols for other things, I sometimes have to clarify/remind the reader that the symbol A means a molecule.Please kindly advise me. Thank you very much.Best regards,Zeyar

Clive · Accepted Answer

Hi,

Let A be a molecule. A can be defined as ........

The chemical properties of the molecule A can be .........

I would like to know if the use of the underlined "the" required or not? Yes. If you just say 'molecule A', it makes me think there are other molecules in the discussion, like D and E. And in this case, there aren't any.

Best wishes, Clive.

Zeyaraun · Answer

Dear Clive,

Thanks a lot for your answer. I have two further quetions.

1)

Is "the" still required if I use A as a generalization for any molecule?

For example, some thing like in: We can always write a rational number n in the form p/q. where n means any rational number rather than a particular reational number.

2)

If I use something like:

Let A be any molecule. Let B be any other molecule that interacts with A.

Which of the followings is better?

Molecule A and molecule B form a complex ...... or

The molecule A and the molecule B form a complex .......

Thank you very much again.

Best regards,

Zeyar

Clive · Answer

Hi,

In this more generalized case, 'the' should not be used.

Best wishes again, Clive

Use of "the" to refer to named objects

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