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Description
Introduction to Logic: And to the Methodology of Deductive SciencesFirst published in Polish in 1936, this classic work was originally written as a popular scientific book one that would present to the educated lay reader a clear picture of certain powerful trends of thought in modern logic. According to the author, these trends sought to create a unified conceptual apparatus as a common basis for the whole of human knowledge. Because these new developments in logical thought tended to perfect and sharpen the
First published in Polish in 1936, this classic work was originally written as a popular scientific book -- one that would present to the educated lay reader a clear picture of certain powerful trends of thought in modern logic. According to the author, these trends sought to create a unified conceptual apparatus as a common basis for the whole of human knowledge.Because these new developments in logical thought tended to perfect and sharpen the deductive method, an indispensable tool in many fields for deriving conclusions from accepted assumptions, the author decided to widen the scope of the work. In subsequent editions he revised the book to make it also a text on which to base an elementary college course in logic and the methodology of deductive sciences. It is this revised edition that is reprinted here.
Part One deals with elements of logic and the deductive method, including the use of variables, sentential calculus, theory of identity, theory of classes, theory of relations and the deductive method. The Second Part covers applications of logic and methodology in constructing mathematical theories, including laws of order for numbers, laws of addition and subtraction, methodological considerations on the constructed theory, foundations of arithmetic of real numbers, and more. The author has provided numerous exercises to help students assimilate the material, which not only provides a stimulating and thought-provoking introduction to the fundamentals of logical thought, but is the perfect adjunct to courses in logic and the foundation of mathematics.
Binding Type: Paperback
Publisher: Dover Publications
Published: 03/27/1995
ISBN: 9780486284620
Pages: 272
Weight: 0.64lbs
Size: 8.44h x 5.43w x 0.53d
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★★★★★ 4
Understated valet tray
Color: Gray, Color: Gray
I like the clean lines and simple shape and the unobtrusive stitching. I'm not crazy about the seam of where the sides of the tray meet, but if the tray is filled, it's not as noticeable. It's a nice catch-all to keep my desk clutter-free!
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Reviewed in the United States on August 20, 2025
★★★★★ 5
The quality is amazing
Color: Beige
Looks great on my dresser
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Reviewed in the United States on November 16, 2025
★★★★★ 5
Pretty
Color: Gray
The Tray is exactly like the picture ..It pretty and sturdy .The material is great.
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Reviewed in the United States on October 9, 2025
★★★★★ 5
A Stylish and Functional Addition to My Décor!
Color: Gray 1 Pack, Size: 8" x 8" x 1.8", Color: Gray 1 Pack, Size: 8" x 8" x 1.8"
I recently purchased the ZHEM Valet Tray for Men in Dark Gray, and I couldn't be happier with this product. It's become an indispensable part of my daily routine and home décor.
The design and craftsmanship of this tray are outstanding. The dark gray color is elegant and complements my furniture perfectly. It's not just a valet tray; it's also a decorative piece that adds a touch of sophistication to my nightstand and dresser.
The size (8x8x1.75 inches) is ideal for holding my daily essentials like my watch, perfume, keys, and even napkins. I appreciate the versatility - it serves as a decorative piece, an organizer, and a functional tray all in one!
The quality is top-notch, and it feels sturdy and well-made. It's also easy to clean, which is a big plus.
Overall, the Tray has exceeded my expectations. It's a stylish and functional addition to my décor, and I highly recommend it to anyone looking for a versatile and attractive tray for their home. Five stars! ⭐⭐⭐⭐⭐
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Reviewed in the United States on September 8, 2023
★★★★★ 5
Super cute landing space for keys
Color: White 1 Pack, Size: 8" x 8" x 1.8", Color: White 1 Pack, Size: 8" x 8" x 1.8"
I always have trouble finding my keys and so it’s been very helpful to have a dedicated spot to easily throw them in when I get home. At first I thought it would be too big but it’s the perfect size for two wallets and keys, and it’s good quality albeit a bit expensive. The gold isn’t too shiny either, it’s a nice touch and it really reduces the look of clutter on your surfaces and helps it look more organized. It also doesn’t slip around.
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Reviewed in the United States on February 2, 2026