User contributions for Lfox

9 March 2025

• 20:4820:48, 9 March 2025 diff hist +517‎ Number ‎No edit summary Tag: Visual edit

26 February 2025

• 20:2320:23, 26 February 2025 diff hist +357‎ Symmetry ‎No edit summary current Tag: Visual edit
• 20:1820:18, 26 February 2025 diff hist +18‎ m Symmetry ‎ →‎Examples Tag: Visual edit

25 February 2025

• 22:2522:25, 25 February 2025 diff hist +396‎ Against models (essay) ‎No edit summary current Tag: Visual edit

13 February 2025

• 00:1400:14, 13 February 2025 diff hist +168‎ m Function ‎No edit summary Tag: Visual edit
• 00:0600:06, 13 February 2025 diff hist +694‎ m Against models (essay) ‎No edit summary Tag: Visual edit

11 February 2025

• 08:5508:55, 11 February 2025 diff hist +2,163‎ Number ‎ →‎References Tag: Visual edit

10 February 2025

• 02:1802:18, 10 February 2025 diff hist +484‎ m Identity ‎No edit summary current Tag: Visual edit
• 02:1202:12, 10 February 2025 diff hist +9‎ m Identity ‎No edit summary Tag: Visual edit

9 February 2025

• 22:4422:44, 9 February 2025 diff hist +22‎ Equivalence relation ‎ Changed redirect target from Identity to Identity#Equivalence relations current Tags: Redirect target changed Visual edit
• 22:4322:43, 9 February 2025 diff hist +2‎ Identity ‎ →‎Equivalence relations Tag: Visual edit
• 22:4322:43, 9 February 2025 diff hist +22‎ N Equivalence relation ‎ Redirected page to Identity Tags: New redirect Visual edit
• 20:4220:42, 9 February 2025 diff hist +4,342‎ Identity ‎No edit summary Tag: Visual edit
• 19:3719:37, 9 February 2025 diff hist +1,106‎ N Identity ‎ Created page with "'''Identity''' is a primary, axiomatic concept. It refers to the "this"-ness of an object, the fact that it is this and not that. Mathematics conceptualizes identity using the equals ("=") symbol. == Equivalence relations == Things can be identical in some respects, but not others. Standard mathematics formalizes this idea as follows. Let <math>S</math> be a set. An ''equivalence relation'' is a relation <math>\sim </math> on <math>S</math> satisfying three axioms..." Tag: Visual edit

7 February 2025

• 23:4423:44, 7 February 2025 diff hist +28‎ m Main Page ‎No edit summary Tag: Visual edit
• 23:4323:43, 7 February 2025 diff hist +1,140‎ Number ‎No edit summary Tag: Visual edit
• 23:2323:23, 7 February 2025 diff hist +307‎ Number ‎No edit summary Tag: Visual edit
• 23:2023:20, 7 February 2025 diff hist −21‎ Number ‎ Blanked the page Tags: Blanking Visual edit

4 February 2025

• 03:4403:44, 4 February 2025 diff hist +188‎ Quantity ‎No edit summary current Tag: Visual edit

18 January 2025

• 00:2800:28, 18 January 2025 diff hist +432‎ Concept ‎ →‎Definition current Tag: Visual edit

28 November 2024

• 02:3202:32, 28 November 2024 diff hist +3,948‎ N On the Electrodynamics of Moving Bodies ‎ Created page with "In this article, I will explain Einstein's paper ''On the Electrodynamics of Moving Bodies''. My goal is not to do a historical investigation of exactly what Einstein thought. My goal is to justify special relativity == The problem == Einstein begins by noting the following problem: Maxwell's equations have a different interpretation in some reference frames than they do in others. He gives the following example, involving a magnet and a hoop of wire which are in mo..." current Tag: Visual edit

27 November 2024

• 22:2522:25, 27 November 2024 diff hist +77‎ m Main Page ‎ →‎All Pages Tag: Visual edit

18 November 2024

• 20:2920:29, 18 November 2024 diff hist +231‎ m Polynomial ‎No edit summary current Tag: Visual edit
• 20:0320:03, 18 November 2024 diff hist +44‎ m Polynomial ‎ →‎Examples Tag: Visual edit

8 November 2024

• 23:5023:50, 8 November 2024 diff hist +1,241‎ m Against models (essay) ‎No edit summary Tag: Visual edit
• 19:5819:58, 8 November 2024 diff hist +200‎ N Against models (essay) ‎ Created page with "In modern civilization, there are two perspectives on what science is. One perspective, which I will call the "identification perspective," is that the task of science is to identify facts of reality."
• 19:5519:55, 8 November 2024 diff hist +29‎ Main Page ‎No edit summary Tag: Visual edit

29 October 2024

• 19:2619:26, 29 October 2024 diff hist +375‎ m Function ‎No edit summary Tag: Visual edit
• 04:1404:14, 29 October 2024 diff hist +1,780‎ N Perturbation theory ‎ Created page with "== Solution to an equation == An equation is a stipulation that two things are equal. Sometimes equations have free variables. In such a case, we can say that a ''solution'' to the equation is an assignment of specific values to its free variables, such that the equation holds true. There are three types of solutions that an equation might have. === 1. Exact solutions === To have an exact solution is a bit of a vague concept. Characteristics of "exact" solutions *..." current Tag: Visual edit
• 03:0203:02, 29 October 2024 diff hist +26‎ m Main Page ‎No edit summary Tag: Visual edit

26 October 2024

• 04:1404:14, 26 October 2024 diff hist +602‎ m Intuitionism ‎No edit summary current Tag: Visual edit

23 October 2024

• 01:3001:30, 23 October 2024 diff hist +1,423‎ m Uncertainty ‎ →‎Functoriality current Tag: Visual edit
• 00:1200:12, 23 October 2024 diff hist +1,231‎ m Uncertainty ‎No edit summary Tag: Visual edit

22 October 2024

• 23:2523:25, 22 October 2024 diff hist +42‎ m Uncertainty ‎ →‎Measure-theoretic interpretation Tag: Visual edit
• 23:2423:24, 22 October 2024 diff hist +4‎ m Uncertainty ‎ →‎General formulation Tag: Visual edit
• 23:2323:23, 22 October 2024 diff hist +1,166‎ Uncertainty ‎ →‎General formulation Tag: Visual edit
• 22:2722:27, 22 October 2024 diff hist +2,082‎ Uncertainty ‎No edit summary Tag: Visual edit
• 20:3120:31, 22 October 2024 diff hist +1,545‎ Uncertainty ‎ →‎How do we apply functions to continuous quantities? Tag: Visual edit

15 October 2024

• 21:4121:41, 15 October 2024 diff hist +3,400‎ N Uncertainty ‎ Created page with "== How do we measure continuous quantities? == First, set up some sort of "triangulation" of the space in which the continuous quantity can take values. For example, a ruler is a "triangulated" line. Typically some sort of quantitative system is chosen to keep track of the cells; e.g. for a ruler we count how many ticks there are. A measurement of a continuous quantity is simply an identification of which one of those intervals the continuous quantity lies inside. It's..." Tag: Visual edit
• 20:1120:11, 15 October 2024 diff hist +18‎ m Main Page ‎ →‎All Pages Tag: Visual edit

6 October 2024

• 07:1007:10, 6 October 2024 diff hist +728‎ N Entropy ‎ Created page with "We should proceed inductively, thinking about entropy in the way that it was initially thought of by people like Clausius, and only then proceeding to Boltzmann's explanation of it in terms of micro-states. == Original version == As background, we start with the fact that there is such a thing as heat, and such a thing as work. They have some interchangeability: You can turn heat into work via an engine (boil water to push a turbine up), and you can turn work into hea..." current Tag: Visual edit
• 06:4206:42, 6 October 2024 diff hist +14‎ m Main Page ‎ →‎All Pages Tag: Visual edit
• 04:4104:41, 6 October 2024 diff hist +297‎ N On a Heuristic Viewpoint Concerning the Production and Transformation of Light ‎ Created page with "These are my notes on Einstein's paper, On a Heuristic Viewpoint Concerning the Production and Transformation of Light, where he explains the photoelectric effect and founds quantum mechanics. I am reading the translation in ''The Dreams that Stuff is Made Of'' by S. Hawking. == Background == ??" current Tag: Visual edit
• 04:2804:28, 6 October 2024 diff hist +119‎ m Main Page ‎ →‎All Pages Tag: Visual edit
• 04:2704:27, 6 October 2024 diff hist +3,228‎ N On the Law of Distribution of Energy in the Normal Spectrum ‎ Created page with "These are my notes on a paper by Max Planck. I am reading the translation in Hawking's book, ''The Dreams that Stuff is Made Of''. == Background == I'm not completely clear on what a blackbody is. One definition: a blackbody is a body that can absorb or emit any frequency of wavelength. Another definition (Hawking's): a blackbody is the light produced by a glowing hot object. I think that the latter definition is better than the former, because it's clearer what it ref..." current Tag: Visual edit
• 02:3202:32, 6 October 2024 diff hist +87‎ m Main Page ‎ →‎All Pages Tag: Visual edit
• 01:4101:41, 6 October 2024 diff hist +13‎ m Coordinate invariance: a manifesto ‎No edit summary current Tag: Visual edit
• 01:3901:39, 6 October 2024 diff hist +56‎ m Main Page ‎ →‎All Pages Tag: Visual edit
• 01:3801:38, 6 October 2024 diff hist +2,519‎ N Coordinate invariance: a manifesto ‎ Created page with "What ''is'' a coordinate system? It is a way of assigning numbers to any point in a given region. The point of a coordinate system is that it allows us to quantitatively describe what is happening to an extended object (at each point of the object). [TODO that second sentence under-sells the value of coordinate systems.] Traditionally, a coordinate system is conceived of as a map <math>R \rightarrow \mathbb{R}^n </math> from the region <math>R</math>, to tuples of <mat..." Tag: Visual edit

22 August 2024

• 15:3215:32, 22 August 2024 diff hist +98‎ m The Limits of Limits ‎No edit summary current Tag: Visual edit