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<p>Book digitized by Google from the library of the University of Michigan and uploaded to the Internet Archive by user tpb.
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<br>Subjects: block; equations; determinant; evanescent; values; variables; equation; tlie; set; arbitrary values; principal minors; systematic equation; principal minor; points lie; square block; google analysis; remaining equations; planes intersect; google appendix</div>
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Charles Lutwidge Dodgson,  Lewis Carroll</div>
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