3 comments

  • Sunday, Feb 24 2019

    Got it. Thank you both! @hbochjk116 @hbochjk116

    0
  • Sunday, Feb 24 2019

    The latter. See "Miscellaneous Logical Indicators" under "Introduction to Logic."

    1
  • Sunday, Feb 24 2019

    I think if A is essential then that would be the necessary condition. So B -> A

    0

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