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Oct 13, 2014 at 12:25 comment added Edoardo Lanari ACtually, Top is proper, but left properness is not due to the fact that every object of Top is cofibrant, which is false (unless you mean some goog subcategory). Moreover, it is right proper because any object is fibrant.
Feb 16, 2012 at 21:53 history edited David White CC BY-SA 3.0
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Jan 8, 2010 at 20:31 vote accept Joey Hirsh
Jan 8, 2010 at 20:25 history answered Reid Barton CC BY-SA 2.5