Zaha Hadid built on her study of maths

http://www.theguardian.com/artanddesign/2016/apr/01/zaha-hadid-built-on-her-study-of-maths

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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 StinchcombeWalkern, Hertfordshire

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

• 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 KingLondon

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