Zaha Hadid built on her study of maths

The late Zaha Hadid, in 2011, standing in front of her first major public commission in the UK, the Riverside Museum in Glasgow. Photograph: Jeff J Mitchell/Getty

Thank you for your immediate response to the death of Zaha Hadid (1 April). I feel the seeds of her extraordinary talent were sown in the study of maths, before embarking on formal architecture.
John Stinchcombe
Walkern, Hertfordshire

• How is it that Manchester is competent to run its own healthcare, but not its schools (Editorial, 1 April)?
Peter Slessenger
Reading

• I have on my shelves a book entitled Steel is Power: the case for nationalisation, written by Labour’s research department and published by Victor Gollancz in 1948 (Report, 1 April). Nothing has changed.
Dr John King
London

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