"A good stack of examples, as large as possible, is indispensable for a thorough understanding of any concept, and when I want to learn something new, I make it my first job to build one." - Paul Halmos (by Qiaochu Yuan)
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Annoying Precision | "A good stack of examples, as large as possible, is indispensable for a thorough understanding of any concept, and when I want to learn something new, I make it my first job to build one." – Paul Halmos | qchu.wordpress.com Reviews
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"A good stack of examples, as large as possible, is indispensable for a thorough understanding of any concept, and when I want to learn something new, I make it my first job to build one." - Paul Halmos (by Qiaochu Yuan)
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Projective objects | Annoying Precision
https://qchu.wordpress.com/2015/03/28/projective-objects
A good stock of examples, as large as possible, is indispensable for a thorough understanding of any concept, and when I want to learn something new, I make it my first job to build one. – Paul Halmos. Laquo; Topological Diophantine equations. March 28, 2015 by Qiaochu Yuan. The goal of this post is to summarize some more-or-less standard facts about projective objects. Here is some slightly nonstandard terminology: we’ll call an. Enriched category a linear category. A commutative ring) is a. If it prese...
Five proofs that the Euler characteristic of a closed orientable surface is even | Annoying Precision
https://qchu.wordpress.com/2014/10/14/five-proofs-that-the-euler-characteristic-of-a-closed-orientable-surface-is-even
A good stock of examples, as large as possible, is indispensable for a thorough understanding of any concept, and when I want to learn something new, I make it my first job to build one. – Paul Halmos. Laquo; Hypersurfaces, 4-manifolds, and characteristic classes. Five proofs that the Euler characteristic of a closed orientable surface is even. October 14, 2014 by Qiaochu Yuan. Be a closed orientable surface of genus. Below we will occasionally write. Omitting the genus.) Then its Euler characteristic.
Reading Recommendations | Annoying Precision
https://qchu.wordpress.com/reading-recommendations
A good stock of examples, as large as possible, is indispensable for a thorough understanding of any concept, and when I want to learn something new, I make it my first job to build one. – Paul Halmos. The following list is mostly intended for undergraduates. The recommendations here generally emphasize clarity of exposition over technical detail. Algebra and Number Theory. Fearless Symmetry: Exposing the Hidden Patterns of Numbers. On Quaternions and Octonions. Primes of the Form. The Shape of Space.
Qiaochu Yuan | Annoying Precision
https://qchu.wordpress.com/author/qchu
A good stock of examples, as large as possible, is indispensable for a thorough understanding of any concept, and when I want to learn something new, I make it my first job to build one. – Paul Halmos. Http:/ math.berkeley.edu/ qchu/. Posts by Qiaochu Yuan:. May 31, 2016. May 26, 2016. What’s a fire, and why does it – what’s the word – burn? May 23, 2016. More on partition asymptotics. May 20, 2016. The man who knew partition asymptotics. May 8, 2016. March 27, 2016. March 20, 2016. Older Posts ».
Tiny objects | Annoying Precision
https://qchu.wordpress.com/2015/05/07/tiny-objects
A good stock of examples, as large as possible, is indispensable for a thorough understanding of any concept, and when I want to learn something new, I make it my first job to build one. – Paul Halmos. Laquo; Compact objects. May 7, 2015 by Qiaochu Yuan. The starting observation of Morita theory. Is that the abelian category. Of (right) modules over a (not necessarily commutative) ring. Does not uniquely determine. Since for example we always have Morita equivalences. Is equivalent to isolating the module.
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CUCEI MATHS | ianmarqz
https://juanmarqz.wordpress.com/cucei-maths
UNA VISIÓN GLOBAL DE LAS ACTIVIDADES MATEMÁTICAS EN EL CUCEI. Elementales (comunes y corrientes, medianas…). Considera entonces que la licenciatura es un solo tramo del camino que te llevará al territorio donde tus pasión será completamente satisfecha : ). La inteligencia es la capacidad global y total para resolver problemas de la vida cotidiana, para implementar soluciones, para dar y cobrar servicios, para trabajar sólos o en equipo y lograr metas planteadas, para vivir con bienestar…. La inteligencia...
Las ecuaciones de Cauchy-Riemann | Ceros y Puntos
https://cerosypuntos.wordpress.com/2016/12/21/las-ecuaciones-de-cauchy-riemann
Un polinomio irreducible en Z (los enteros) que nunca toma valores primos. La topología de Zariski en Spec(R) →. Diciembre 21, 2016 · 23:15. Ir a los Comentarios. Las ecuaciones de Cauchy-Riemann. La idea de ésta entrada es mostrar dos ejercicios que se resuelven por medio de las ecuaciones de Cauchy-Riemann. Consideremos un conjunto abierto. Bajo la topología usual de. Es diferenciable en el sentido complejo. Existe. Diremos que. Si es diferenciable en sentido complejo en una vecindad (no agujerada) de.
aforestoflobsters.blogspot.com
A Forest of Lobsters ...: January 2015
http://aforestoflobsters.blogspot.com/2015_01_01_archive.html
A Forest of Lobsters . All of them graceful. Thursday, January 08, 2015. Links to this post. Sunday, January 04, 2015. And so the wheels of the world turn. As Chilean Ambassador in 1972, Neruda spent most of a three-hour meeting with President Georges Pompidou designed to negotiate Chile’s foreign debt discussing Baudelaire instead. Links to this post. Saturday, January 03, 2015. Expand your comfort zone. Links to this post. In all of these cases, there's one party which holds itself responsible for some...
aforestoflobsters.blogspot.com
A Forest of Lobsters ...: Oh well
http://aforestoflobsters.blogspot.com/2015/05/oh-well.html
A Forest of Lobsters . All of them graceful. Monday, May 25, 2015. Subscribe to: Post Comments (Atom). View my complete profile. From wrong to wrong the exasperated spirit. Proceeds, unless restored by that refining fire. Where you must move in measure, like a dancer.'. The day was breaking. In the disfigured street. He left me, with a kind of valediction,. And faded on the blowing of the horn. Time past and time future . Growing Pains: Arctic Sea Ice at Record Lows. The Art of Nonconformity.
aforestoflobsters.blogspot.com
A Forest of Lobsters ...: December 2014
http://aforestoflobsters.blogspot.com/2014_12_01_archive.html
A Forest of Lobsters . All of them graceful. Monday, December 15, 2014. Both bitter and serene. The next day I woke up with the feeling that I was myself at last. A great calm, at the same time both bitter and serene, spread through me. I no longer had to struggle between my Russian and my French identities. I accepted myself.'. Andrei Makine trans. Geoffrey Strachan, Dreams of My Russian Summers. Links to this post. Tuesday, December 09, 2014. You're missing the point. Links to this post. The day was br...
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Annoying Precision | "A good stack of examples, as large as possible, is indispensable for a thorough understanding of any concept, and when I want to learn something new, I make it my first job to build one." – Paul Halmos
Math on the Internet. A good stack of examples, as large as possible, is indispensable for a thorough understanding of any concept, and when I want to learn something new, I make it my first job to build one. – Paul Halmos. May 17, 2015 by Qiaochu Yuan. We proved a theorem due to Gabriel characterizing categories of modules as cocomplete abelian categories with a compact. Where “generator” meant “every object is a colimit of finite direct sums of copies of the object.”. Continue Reading ». Regarded as a ...
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Future Plans for QC-Hub Site Development. QC Hub is still a work in progress, currently in the begining stages of development. QC Hub will soon be updated with all new content including but not limited to:. Quality Control Articles (GD&T, Calibrations, Statistics, ect.). Downloadable Software (Free and Paid). There is currently no scheduled release date for all of the features, softwares, and services of QC Hub. Please check back in a few weeks for updates. First News Content Added.
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