SIGNED BY AUTHOR AND ILLUSTRATOR WITH DEDICATION to Yehoshua Bar-Hillel (1915-1975), an eminent Israeli philosopher, mathematician, and linguist, perhaps best known for his pioneering work in machine translation and formal linguistics. RARE book on Lattice Theory by Lillian Rosanoff Lieber (1886-1986), a Russian-American mathematician and popular author who often teamed up with her illustrator husband, Hugh Gray Lieber, to produce works written in a unique, free-verse style, praised by no less than Albert Einstein, C.J.Keyser, E.T.Bell, and S.I.Hayakawa. She joined the mathematics department at Long Island University (LIU) in 1934, became department chair in 1945, and was made a full professor in 1947; she was at LIU and the Galois Institute of Mathematics and Art in Brooklyn, New York until her retirement in 1954. Over her career she published some 17 books, which were and illustrated with whimsical line drawings by her husband. 220x145mm. VII+287 pages. Beige cloth Hardcover with illustrated dust-jacket. Red lettering on spine. Jacket spine yellowing/faded, wrinkled and water-stained. Jacket spine upper edge taped. Jacket front upper edge and corner partly missing. Jacket edges tattered. Spine wrinkled. Spine edges bumped. Author`s and illustrator`s signed dedication on front whitepage. [SUMMARY]: This extremely rare and unique book on lattice .