Complete Works of Lewis Carroll (146 page)

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Authors: Lewis Carroll

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   = No
x
are
y

   = No
y
are
x

  

 

  All
y
are
x
  

 

  No
xy
′
exist

   = No
x
are
y
′

   = No
y
′
are
x
  

 

  All
y
are
x
′
  

 

  No
x
′y
exist

   = No
x
′
are
y

   = No
y
are
x
′
  

 

  All
y
′
are
x
  

 

  No
x
′y′
exist

   = No
x
′
are
y
′

   = No
y
′
are
x
′
  

 

  All
y
′
are
x
′
  

 

 

 

 

 

 

 

  Some
x
are
y
,

  and some are
y
′
  

 

  Some
y
are
x

  and some are
x
′
  

 

  Some
x
′
are
y
,

  and some are
y
′
  

 

  Some
y
′
are
x

  and some are
x
′
  

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