math Definition and 59 Threads

Mathematics is an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes. These topics are represented in modern mathematics with the major subdisciplines of number theory, algebra, geometry, and analysis, respectively. There is no general consensus among mathematicians about a common definition for their academic discipline.
Most mathematical activity involves the discovery of properties of abstract objects and the use of pure reason to prove them. These objects consist of either abstractions from nature or—in modern mathematics—entities that are stipulated to have certain properties, called axioms. A proof consists of a succession of applications of deductive rules to already established results. These results include previously proved theorems, axioms, and—in case of abstraction from nature—some basic properties that are considered true starting points of the theory under consideration.Mathematics is essential in the natural sciences, engineering, medicine, finance, computer science and the social sciences. Although mathematics is extensively used for modeling phenomena, the fundamental truths of mathematics are independent from any scientific experimentation. Some areas of mathematics, such as statistics and game theory, are developed in close correlation with their applications and are often grouped under applied mathematics. Other areas are developed independently from any application (and are therefore called pure mathematics), but often later find practical applications. The problem of integer factorization, for example, which goes back to Euclid in 300 BC, had no practical application before its use in the RSA cryptosystem, now widely used for the security of computer networks.
Historically, the concept of a proof and its associated mathematical rigour first appeared in Greek mathematics, most notably in Euclid's Elements. Since its beginning, mathematics was essentially divided into geometry and arithmetic (the manipulation of natural numbers and fractions), until the 16th and 17th centuries, when algebra and infinitesimal calculus were introduced as new areas. Since then, the interaction between mathematical innovations and scientific discoveries has led to a rapid lockstep increase in the development of both. At the end of the 19th century, the foundational crisis of mathematics led to the systematization of the axiomatic method, which heralded a dramatic increase in the number of mathematical areas and their fields of application. The contemporary Mathematics Subject Classification lists more than 60 first-level areas of mathematics.

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  1. L

    B Older student going back to basics

    I am trying to imporove my general maths and revisting my pre-college text books. For the above example question, my answer was 4 which is not correct as it is -4. The only difference I can see in my working is the first operation 3a^2. Here I simply did 3 x -2^2 which is -12 but in the answer...
  2. Heisenberg7

    Algebra Contest math - books, problem sets, videos, etc..

    Hello, I am looking for contest math books, problem sets, videos, etc. I'm quite good at algebra, but I'm not so good at geometry, counting, probability and number theory. I know a few resources such as aops, AMC, AIME, local competitions and a few books. It would be great if you could suggest...
  3. WMDhamnekar

    Financial Math questions?

    Where can I ask financial math question in this forum?
  4. 1

    I Different Substitution for Solving an Integral

    I have a question about how to solve the following integral: ##\int \frac 1 {x\sqrt{3x^2+2x-1}}dx##, I know how to get the right answer (which agrees with WolframAlpha and the book I got the question from) through substituting ##\frac 1u## for ##x##, completing the square and finally doing a...
  5. jb188397

    Textbook/study plan questions

    I am self studying physics as a hobby with the very broad goals of eventually learning theoretical analytical mechanics, EM, general relativity, etc. I have no specific deadlines. My two questions are: With regards to learning the required math, if there is no particular rush, is it better to...
  6. S

    Hello there

    Hello everyone, just serving up a quick introduction. I took some physics and math classes during, I believe, the Eisenhower administration (anything before 2000 is hazy). Nevertheless, due to a lack of scientific acumen, I will be a taker, not a giver, on these forums. Here's to a second...
  7. chwala

    Evaluate the limit of the given problem

    Ok, to my question; was the step highlighted necessary? The working steps to solution are clear. Cheers.
  8. Dudemanous

    New to Forums and Interested in Math/Science?

    I'm new here and new in general to online forums. I'm a middle-aged guy who has been online for decades, but I just haven't used forums or social media very much. I've always had a casual interest in math/science.
  9. pinball1970

    I Researchers calculate how much faster time passes on the Moon

    Fro phys.org "The team in California has used math to calculate the difference in time passage between the Earth and moon, and also between both bodies and the solar system's barycenter. In so doing, the team found that time on the moon ticks by at 0.0000575 seconds faster per day (57.50 µs/d)...
  10. Q

    Why is this happening? (losing confidence in my math and science skills)

    Hello, I am a middle schooler who likes doing math, physics, and other forms of science. This year, when school starts, I will be attending clubs such as the science olympiad and Math Counts. In a previous thread, I have asked how to study for math counts, but when I started studying I noticed...
  11. Q

    Needing advice for winning/doing well in a Math Counts competition

    Hello! I am a passionate math student wanting advice on how to succeed and go far in a math competition called Math Counts, a mostly word problem-based competition for grades 6-8. Anything helps! Thank you!
  12. jesscataylr

    Did I Already Sign In?

    Glad to be back! Last time I tried to sign in, I just got the message to email the mods and didn't bother. So a new account it is! I like math.
  13. QuantumPhyZ

    Other Can I (with a math major) do a masters in theoretical physics?

    Hello! This is a continuation thread from this one, but the question is different from the one I purposed that time, thus I'm creating a new thread. I will enter in details in what credits I do have, also the title is self-explanatory. I have done credits and this courses (I will also give the...
  14. S

    Obligatory introductory new-member post

    Hi, I am a college student majoring in math and statistics but fascinated by physics I have been reading this site for years and I am really excited to finally hopefully engage and contribute anything meaningful! Good to meet you :)
  15. S

    How to Predict Outcomes of New Equations Without Solving for Variables?

    TL;DR Summary: Isolating coefficient contribution to outcome change This is a problem I've been trying to solve for almost 3 days now, without any solutions. Say we have x + y + z = 5, and x is 1, y is 1, and z is 3. We have a second equation = 2x + 3y + 4z = 17. Using the outcome difference...
  16. Ignorantsmith12

    I'm Ignorantsmith, and I've come to be less ignorant.

    Hello, everyone. Thank you for allowing me to post on your forum. I am not good enough at math to become a physicist, but I love physics and found this forum through my Google searches. Hopefully, I can learn enough here just to call myself Smith
  17. fahadismath

    What is the complete derivation of the nonhomogeneous fluid flow rate equation?

    does anyone know the derivation of the general solution of the nonhomogeneous equation shown in the image (book name: Devendra K. Chaturvedi - Modeling and Simulation of Systems Using MATLAB and Simulink -CRC Press (2010))
  18. Confusionmatrix

    A latebloomer trying to find his place in the world

    Hello all, Long time lurker of PGRE applicants here. Roughly ten years ago, I started my academic journey humbly at a local community college. I was a horrible student in high school who never did homework or never found interest in academics. In fact, I nearly flunked out. At the beginning...
  19. S

    How do I use LaTex in the forum for to write equations?

    Hello. I registered today. Maybe you can help me. How do I use LaTex in the forum for to write equations?
  20. mw3565

    I'm a person who loves physics.

    I'm an ordinary college student who likes physics, engineering mathematics, and electromagnetism. I'm not sure because it's my first time participating in an overseas forum, not a domestic one, but I look forward to your kind cooperation.
  21. S

    Barely passed intro to algebra pt 1, not recommended for pt 2

    I learned to speak several languages other than English but, speaking math wasn't one of them; as soon as numbers and symbols are part of a task, my brain seems to revert to using fingers and toes.
  22. A

    Calculus What Chapters in Thomas' Calculus Would Calc I be?

    I'm trying to pace myself to get up to speed with my calc and physics before going back to college. It's been so long that I don't know how much we got up to in calc I. Can someone tell me what chapter in Thomas Calculus does calc I go up to, or do they cover the whole thing?
  23. diogenesNY

    Why Do We Celebrate Pi Day on March 14?

    Happy Pi Day everyone :) https://en.wikipedia.org/wiki/Pi_Day https://www.dogpile.com/serp?q=pi+day&sc=ZBfGciaK2GX310
  24. M

    How Does a Math Forum Assist Beginners?

    Hi I am new member, I like to do math but I dont know everything so I hope forum will help me when I stuck!
  25. yaman

    Why is the Heat equation solved with separation of variables but not with Fourier transformations?

    How did you find PF?: Years ago online forums were more visible. These days they are left behind social media. I searched Google and now I am here. Why in heat transfer books Fourier's partial differtial unsteady state heat transfer equation is solved with seperation of variables but not with...
  26. TomVassos

    I Calculating Statistical Likelihood Knowing Standard Deviations

    Let’s say that we know, with 95% confidence, that something is likely to occur when the Universe is between 1058 and 10549 years old. What is the statistical likelihood that it has already occurred in the first 13.8 billion years of the Universe’s existence? (1.38 X 1010 years) I know the...
  27. A

    How Does Basic Calculus Open Doors in Physics?

    I am quite interested in math and physics and keep on trying to discover new stuff. I recently learnt badic calculus and i find math cool
  28. jedishrfu

    B Major Math Discoveries in 2023

    Covering: - New Ramsey number bounds - Aperiodic tiling discovery of an Einstein tile - Three Arithmetic Progressions
  29. TomVassos

    I Calculating the End of the Universe Using Standard Deviation Statistics

    One possible end to the Universe is called vacuum decay, where a Higgs boson could transition from a false vacuum to a true vacuum state. This would create a vacuum decay bubble (known as bubble nucleation) that would expand at light speed, destroying everything in its path. According to Anders...
  30. garra

    Studying Can I be a good theorist without a degree in math?

    I wondered this when i saw that Robert Penrose its a physicist and a mathematician. If i dont do a math physics degree I wont be effective?
  31. L

    Questing for the unification of mathematics and my intuition

    Howdy from West Virginia!! If you would have told me 30 years ago that I'd be researching physics and math for fun, I would have said, "Are you high.... and by the way, what is physics?!?" I'm obsessed with all things science, and tickled by all things quantum. I became interested in science and...
  32. H

    Mathematical process for protein folding

    Hello, I am currently working on an idea for a possible future masters or PhD in cellular biology, however my idea is currently just a passion project. For it to work, I would need to learn how to predict and make a specific protein to do a specific function, in this instance I need to use it to...
  33. Frankster

    Need Help with Math and More? Welcome to PF - Your Online Resource!

    Looking for online help with math and other questions.
  34. Z

    What are some resources for learning about physics as a hobbyist?

    I am a math PhD working in software/technology who is a physics hobbyist. I’ve gone through MIT 8.01 - 8.05 courses and watched and worked through a number of additional videos and problems. My interest is mostly getting exposure to more ideas through the community. I don’t plan on trying to...
  35. DaveC426913

    B Deceptively simple geometry question on SAT test

    Fascinating, and utterly unintuitive. This is a question that appeared on the American SAT test until it was recently removed. (citation: Veritasium, to which I will not link at this time.) Every student ever has gotten it wrong, and that's because the SAT writers got it wrong too. The...
  36. MantisShrimp

    How much force can a truck seat back cushion absorb during a collision?

    I do not know much about this, please help. My truck seat back cushion is 2" thick. Truck A is ~5,700 lbs from google. 2011 f-150 super cab 6.5ft bed. Truck B is ~5775. 2015 GMC Yukon xl slt. If truck A is stopped and braked and truck B hits truck A going 45-55mph creating a force of...
  37. T

    Feynman lectures question where he explains math in terms of nuts

    Feynman lectures question where he explains math in terms of nuts. Feynman has a few lectures where he explained math numbers with Mayan counting as an example. I am not looking for that example. The example I am looking for is where he just uses nuts to give examples of math, add...
  38. ikihi

    Calculus Help locating a Math Equation to fit this curve

    The concentration is the Y axis, and the values are the x axis. What is the equation for finding a target value on a curve between set of points?
  39. S

    Why some students are good at math and others lag behind

    "Former math teacher explains why some students are good at math and others lag behind" The title of a news article shown on todays Yahoo site, https://www.yahoo.com/news/former-math-teacher-explains-why-122744193.html Looking in the section called " Why are some students ‘good’ at math and...
  40. B

    Improving Engineering Math Skills: Tips and Resources for Self-Study

    Hi my names Bert I’m 23 and I want to get better at engineering math
  41. E

    Why is the square root of x^2 = |x|?

    If I reason this as follows, I run into problems. Please help me understand what is wrong with reasoning like this. a) I start with the left hand side of the equation and let that x be -2. b) I square it. This gives me 4. So I now have the square root of 4. c) The square root of 4 is +/- 2. The...
  42. Memo

    Integral involving powers of trig functions

    Could you check if my answer is correct? Thank you very much! Is therea simpler way to solve the math?
  43. kai sinclair

    Efficient Calculation of Final Magnitude and Angle in Vector Addition Method

    okay so I'm a Electrician I've found short method of calculating the final magnitude of a system (Lₜ), this relies mainly on Eucliud's axiom of angles within parrallel lines and is this ∑(cos(θₙ-θₜ)⋅Lₙ)=Lₜ where Lₙ and θₙ are the initail manignitude and angles respectively, and θₜ is the final...
  44. V

    Hi! Hoping to broaden my horizons :)

    Hello, you can call me V! I just got into highschool and am interested in physics, but I am super bad at math and science... I've been an english and art person my whole life so it's been tough LOL. I joined in the hopes that surrounding myself with STEM related stuff will have a positive...
  45. G

    What is rotational energy and how does it impact our world?

    Hello everyone, I am very new to the concept of advanced math and am looking to broaden my knowledge. I had sort of a vision involving the concept of swirling water and it has led me down the path of rotational energy. I am eager to learn more and contribute if possible in the future to the...
  46. E

    I Questions about submitting papers for peer review

    Do papers done without the math get approved? I've got some ideas about how the universe works but I've just focused on intuitively understanding how GR works and never got interested in the math end until now that I'm finished. Or should I just focus on that part now?
  47. Avaro667

    Is math really that important to do physics?

    Hello everyone . Recently i have been thinking about the importance of math in physics . There are many times that i read books or papers that contain tons of hard math and yet i feel it doesn't really add that much to my understanding . On the other hand there are sources that provide a very...
  48. C

    Courses Could points be taken off for not factoring?

    Would a professor in a linear algebra, another upper-level math course, or an upper-level physics course take off points if I don't show steps when factoring an equation expression?
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