| 1. | Of course, there is always the terrible counterexample of Gujarat.
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| 2. | There are closed quotients of the Moore plane which provide counterexamples.
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| 3. | Euler's sum of powers conjecture was disproved by counterexample.
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| 4. | Max Black has argued against the identity of indiscernibles by counterexample.
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| 5. | As noted above, scrutiny to detail will often produce counterexamples.
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| 6. | Other counterexamples may be found among the rank one symmetric spaces.
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| 7. | They summarized their work in Counterexamples in Topology ( 1978 ).
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| 8. | Please, also check, Wikipedia : Fair use # Counterexamples.
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| 9. | :: Thanks, that is indeed a quite simple counterexample?
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| 10. | Flaws in arguments are pointed out, counterexamples offered, refinements made.
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