A solar eclipse is the inverse of a lunar eclipse.

By 8 Rorek on August 28, 2007

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Discussion (4)

http://alkanshel.myopenid.com/

4 Alkanshel who agreed, says

Converse?

Make a related claim about 1 year ago (link)
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8 Rorek who agreed, says

I'm not sure if any of these logical operations really apply.

  • statement: if p then q
  • converse: if q then p
  • inverse: if not p then not q
  • contrapositive: if not q then not p
"The moon is between the sun and the earth" and "The earth is between the sun and the moon" have a geometrical relationship, but their logical relationship is just "if p then not q" and, of course, the contrapositive.

I was thinking in terms of inverting geometrically the moon/earth system.

Make a related claim about 1 year ago (link)
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4 Alkanshel who agreed, says

Hmm. I suppose that's true.

Make a related claim about 1 year ago (link)
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2 tenebrus who disagreed, says

I'm not sure that word means what you think it means.

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