I would like to ask if any specific rules apply to the usage of some and some of phrases and especially in which cases either of them is not suitable for a sentence.

I understand that e.g. a phrase like some of my friends is grammatically correct, but what makes me hesitate is the following sentence from the field of physics:

Some of relevant ideas were mentioned many years ago.

Can the of preposition be used in this case, or is the sentence incorrect?

(As a side note, I think that the word mentioned is not chosen very well and should be replaced by a more suitable verb or a construction saying that there have been scientists who stated important theorems such as the divisibility of atoms.)

closed as off-topic by FumbleFingers, tchrist, deadrat, Chenmunka, Edwin Ashworth Jul 6 '15 at 18:14

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  • The of issue would be better addressed on English Language Learners (basically, it's completely unacceptable in the cited context). Better alternatives to mentioned include raised, put forward, advanced, discussed, etc. – FumbleFingers Jul 5 '15 at 13:33

Using the word 'the' between 'of' and 'relevant' could help to make more sense or remove the word 'of' altogether.

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