#logician__logistician  a person skilled at symbolic logic
  supertype:  expert  a person with special knowledge or ability who performs skillfully
  instance:  William_Stanley_Jevons  Charles_Franklin_Peirce  Willard_Van_Orman_Quine  Bertrand_Arthur_William_Russell  John_Venn
  subtype:  dialectician  a logician skilled in dialectic
  subtype:  syllogist__syllogizer__syllogiser  logician skilled in syllogistic reasoning

No statement uses or specializes logician; click here to add one.