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mandoc.bsd.lv | ||
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wiki.ros.org
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pandoc.org
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kramdown.gettalong.org
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| | | | | kramdown is a fast, pure-Ruby Markdown-superset converter | |
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www.jeremykun.com
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| | | Previously in this series we've seen the definition of a category and a bunch of examples, basic properties of morphisms, and a first look at how to represent categories as types in ML. In this post we'll expand these ideas and introduce the notion of a universal property. We'll see examples from mathematics and write some programs which simultaneously prove certain objects have universal properties and construct the morphisms involved. | ||
