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LEADER 03888cam 2200625 i 4500

001 on1483813041;

003 OCoLC;

005 20251025141928.3;

008 250826t20252025nyua e 001 0 eng d;

019 a| 1499873593;

020 a| 9781541606555q| (hardcover);

020 a| 1541606558q| (hardcover);

020 z| 9781541606562q| (ebook);

035 a| 40032953804;

035 a| (OCoLC)1483813041z| (OCoLC)1499873593;

050 4 a| QA41b| .C46 2025;

082 04 a| 510.1482| 23;

082 04 a| 510.12| 23/eng/20250916;

100 1 a| Cheng, Eugenia,e| author.1| https://id.oclc.org/worldcat/entity/E39PBJwtrDqGwv6mCyhFbydxXd=| ^A1303708;

245 10 a| Unequal :b| the math of when things do and don't add up /c| Eugenia Cheng.;

246 30 a| Math of when things do and don't add up;

246 3 a| Math of when things do and do not add up;

250 a| First US edition.;

264 1 a| New York :b| Basic Books,c| 2025.;

300 a| 386 pages :b| illustrations ;c| 25 cm;

334 a| single unit2| rdami;

336 a| textb| txt2| rdacontent;

336 a| still imageb| sti2| rdacontent;

337 a| unmediatedb| n2| rdamedia;

338 a| volumeb| nc2| rdacarrier;

500 a| Includes index.;

500 a| "Originally published in May 2025 by Profile Books in the United Kingdom" --Title page verso.;

505 0 a| When are things the same? -- Equations -- The stories hiding behind numbers -- Equality between functions -- Why the Earth could be a bagel -- Interchangeable lids and mathematical glue -- Logic, emotions, insight -- Sameness in category theory -- Sameness in branches of math -- From Sheffield to Buffalo -- More dimensions, more forgiveness.;

520 a| "Math is famous for its equations: 1 + 1 = 2, a^2 + b^2 = c^2, or y = mx + b. Much of the time it can seem like that's all mathematics is: following steps to show that what's on one side of an equation is the same as what's on the other. In 'Unequal,' Eugenia Cheng shows that's just part of the story, and the boring part to boot. Mathematics isn't only about showing how numbers and symbols are the same. It isn't even just about numbers and symbols at all, but a world of shapes, symmetries, logical ideas, and more. And in that world, the boundary between things being equal and unequal is a gray area, or perhaps a rainbow of beautiful, vibrant, subtly nuanced color. As 'Unequal' shows, once you go over that rainbow, almost everything can be considered equal and unequal at the same time, whether it's shapes (seen from the right perspective, a circle is the same as an ellipse), words (synonyms), or people--even numbers! It all depends on what features we care about. And it's up to us what we do about it. That's because mathematics isn't a series of rules, facts, or answers. It's an invitation to a more powerful way of thinking" --c| Amazon website.;

650 0 a| Mathematical notation.=| ^A16527;

650 0 a| Mathematicsx| Social aspects.=| ^A1429623;

650 0 a| Arithmetic.=| ^A46607;

650 0 a| Equality.=| ^A1123;

650 0 a| Mathematicsx| Philosophy.=| ^A14926;

650 6 a| Arithmétique.;

650 6 a| Mathématiquesx| Philosophie.;

650 7 a| arithmetic.2| aat;

650 7 a| Arithmetic2| fast;

650 7 a| Equality2| fast;

650 7 a| Mathematical notation2| fast;

650 7 a| Mathematicsx| Philosophy2| fast;

650 7 a| Mathematicsx| Social aspects2| fast;

949 i| 30372017705895o| jjlm;

960 o| 1s| 32.00t| Joyner48u| JAPPz| USD;

596 a| 1;

998 a| 6653134;

999 a| QA41 .C46 2025w| LCc| 1i| 30372017705895d| 1/28/2026e| 1/28/2026k| CHECKEDOUTl| JGESm| JOYNERn| 1r| Ms| Yt| JGESBKu| 11/21/2025x| BOOKz| JSTACKSo| .STAFF. jjlm;

Unequal : the math of when things do and don't add up / Eugenia Cheng.

Author/creator	Cheng, Eugenia author.
Format	Book
Edition	First US edition.
Publication	New York : Basic Books, 2025.
Copyright Date	©2025
Description	386 pages : illustrations ; 25 cm
Subjects	Mathematical notation. Mathematics--Social aspects. Arithmetic. Equality. Mathematics--Philosophy. Arithmétique. Mathématiques--Philosophie.

Portion of title	Math of when things do and don't add up
Variant title	Math of when things do and do not add up
Contents	When are things the same? -- Equations -- The stories hiding behind numbers -- Equality between functions -- Why the Earth could be a bagel -- Interchangeable lids and mathematical glue -- Logic, emotions, insight -- Sameness in category theory -- Sameness in branches of math -- From Sheffield to Buffalo -- More dimensions, more forgiveness.
Abstract	"Math is famous for its equations: 1 + 1 = 2, a^2 + b^2 = c^2, or y = mx + b. Much of the time it can seem like that's all mathematics is: following steps to show that what's on one side of an equation is the same as what's on the other. In 'Unequal,' Eugenia Cheng shows that's just part of the story, and the boring part to boot. Mathematics isn't only about showing how numbers and symbols are the same. It isn't even just about numbers and symbols at all, but a world of shapes, symmetries, logical ideas, and more. And in that world, the boundary between things being equal and unequal is a gray area, or perhaps a rainbow of beautiful, vibrant, subtly nuanced color. As 'Unequal' shows, once you go over that rainbow, almost everything can be considered equal and unequal at the same time, whether it's shapes (seen from the right perspective, a circle is the same as an ellipse), words (synonyms), or people--even numbers! It all depends on what features we care about. And it's up to us what we do about it. That's because mathematics isn't a series of rules, facts, or answers. It's an invitation to a more powerful way of thinking" -- Amazon website.
General note	Includes index.
General note	"Originally published in May 2025 by Profile Books in the United Kingdom" --Title page verso.
Issued in other form	Online version: Cheng, Eugenia. Unequal. New York : Basic Books, 2025 9781541606562
ISBN	9781541606555 (hardcover)
ISBN	1541606558 (hardcover)
ISBN	(ebook)

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Unequal : the math of when things do and don't add up / Eugenia Cheng.

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