EXERCISE, LEFT AS AN
\ˈɛksəsˌa͡ɪz], \ˈɛksəsˌaɪz], \ˈɛ_k_s_ə_s_ˌaɪ_z]\
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Used to complete a proof in technical books when one doesn'tmind a handwave, or to avoid one entirely. The completephrase is: "The proof [or "the rest"] is left as an exercisefor the reader." This comment *has* occasionally beenattached to unsolved research problems by authors possessed ofeither an evil sense of humour or a vast faith in thecapabilities of their audiences.
By Denis Howe
