A Method for Studying Model Hamiltonians. A Minimax Principle for Problems in Statistical Physics.
22 x 15.5 cm. Hardcover with dust jacket. x, 170 pages. Text in English. Small signs of use, few spots on endpapers, very good condition, see picture.
P. Noordhoff, Groningen, 1928, 1923
24.5 x 16.5 cm, cloth hardcovers, 2 volumes; Vol. 1: Het Platte Vlak (meer dan 120 figuren en ruim 250 vraagstukken), 2nd ed., 1928; Vol. 2: De Ruimte (46 figuren en ruim 165 vraagstukken), 1923, with separately Atlas in rear pocket. Text in Dutch. Boards show general wear and minor soiling; Vol. 2 bears an ownership stamp, paper aged toned, still in good condition, see picture.
22 x 15.5 cm. Hardcover with dust jacket. x, 170 pages. Text in English. Small signs of use, few spots on endpapers, very good condition, see picture.
22.5 x 15 cm. Paperback. xii, 260 pages. Text in English. Light crease to cover, otherwise very good condition, see picture.
21.5 x 13.5 cm. Paperback. xvi, 566, (16) pages. Text in English. Very good condition, see picture.
23.5 x 15.5 cm. Paperback. vi, 352 pages. Text in English. Slightly discoloured, very good condition, see picture.