English mathematician has claimed one in America on another planet? (8)
I believe the answer is:
venusian
'on another planet?' is the definition.
(pertaining to Venus)
'english mathematician has claimed one in america' is the wordplay.
'english mathematician' becomes 'Venn' (John Venn of Venn diagram fame).
'has' is an insertion indicator.
'claimed one' becomes 'i' (I can't explain this - if you can you should give a lot more credence to this answer).
'in' is an insertion indicator.
'america' becomes 'usa' (synonyms).
'i' inserted inside 'usa' is 'usia'.
'venn' enclosing 'usia' is 'VENUSIAN'.
Can you help me to learn more?
I've seen this clue in The Telegraph.
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