### Is there art in number?

## SquareCirclez Mathematics, learning, computing, travel - and whatever...

- Math Homework Help: A Guide to the Best AI Math Solver of 2023by Casey Allen on October 24, 2023 at 4:20 am
About a quarter of the average college student's courseload is general education requirements. While these are graduation requirements, they also are usually time-wasters. They're challenging and stressful... but luckily, help is available. If you're looking for quick math homework help, an online AI math solver can bring your grades up quickly and effectively. Read on to The post Math Homework Help: A Guide to the Best AI Math Solver of 2023 first appeared on SquareCirclez. Related posts: 5 Best Free Math Problem Solvers Math problems allow students to learn new concepts and strengthen... Curriculum Webs - more homework needed "Weaving the Web into Teaching and Learning" Cunningham, C and... Buyer’s Guide: TI-84 Graphing Calculator Math classes can be daunting. From a young age, I... My dilemma - ethical math help Is there a difference between paying someone to do...

- 5 Best Free Math Problem Solversby Casey Allen on June 6, 2023 at 3:43 am
Math problems allow students to learn new concepts and strengthen problem-solving skills. But many learners feel confused or frustrated if they can’t find the correct solution. A math problem solver is a handy tool that helps students doublecheck their work and identify errors. However, not all math problem solvers are created equal. Here are the The post 5 Best Free Math Problem Solvers first appeared on SquareCirclez. Related posts: Microsoft Math 3.0 Review MS Math 3.0 is a well-designed computer-based math tool.... Free math software downloads Wanting to use some math software but find it’s too... GraphSketch.com - free online math grapher GraphSketch is a free offering that allows the user to... Context Free math-based art Context Free is software you can use to produce some...

- Reviewing Six Online Math Tutoring Services - What’s the Best?by Hugo Pegley on June 22, 2022 at 4:00 am
Math is an exciting field of study that can lead to a variety of exciting careers or research projects. But if you're a student having difficulty with the topic, you might be thinking about enrolling in an online math tutoring program. This is a great way for you to get assistance in a format and The post Reviewing Six Online Math Tutoring Services - What’s the Best? first appeared on SquareCirclez. Related posts: How to Pick A Live Math Chat Tutoring Service If you’re looking for a live math tutor, you are... How Much Does an Online Math Tutor Cost? Across the world, math is the key to understanding many... Online Algebra Math Tutor Many private and public high schools and colleges require students... Best Online Calculus Math Tutor: How to Choose Calculus and math require tremendous background information, practice, and good...

- Picking the Best Online Precalculus Math Tutorby Hugo Pegley on June 22, 2022 at 3:55 am
Students who want to go on to study math, science, engineering, and other disciplines in college, usually find that their chosen college values some prior knowledge of calculus. An online precalculus math tutor could be the answer. High schools commonly offer precalculus courses in the 11th grade before introducing calculus in the 12th. Precalculus is The post Picking the Best Online Precalculus Math Tutor first appeared on SquareCirclez. Related posts: How Much Does an Online Math Tutor Cost? Across the world, math is the key to understanding many... Best Online Calculus Math Tutor: How to Choose Calculus and math require tremendous background information, practice, and good... Online Algebra Math Tutor Many private and public high schools and colleges require students... Reviewing Six Online Math Tutoring Services - What’s the Best? Math is an exciting field of study that can lead...

- How Much Does an Online Math Tutor Cost?by Hugo Pegley on June 15, 2022 at 4:17 am
Across the world, math is the key to understanding many complex subject matters. It is also imperative that a student does not fall behind, as math typically builds on previous concepts. So, it is no secret that many typical high school and college students struggle in math classes. Due to this fact, skilled math tutors The post How Much Does an Online Math Tutor Cost? first appeared on SquareCirclez. Related posts: Online Algebra Math Tutor Many private and public high schools and colleges require students... Best Online Calculus Math Tutor: How to Choose Calculus and math require tremendous background information, practice, and good... How to Choose a Math Tutor Are you in need of mathematics support, or do you... How to Pick A Live Math Chat Tutoring Service If you’re looking for a live math tutor, you are...

## Recent Questions - Mathematics Stack Exchange most recent 30 from math.stackexchange.com

- Number of students who own catsby Shs Tht on October 10, 2024 at 1:39 pm
In a classroom of 100 students, each student owns at least one pet: a dog, a cat, and/or a bird. If 41 students have a dog, 13 students have only a bird, 22 students have a cat and a bird, and 8 students have a dog and a cat, how many students have a cat? Fo this question I drew the following Venn diagram: where $C$ is the number of students who own only a cat, and $D$ is the number of students who own only a dog. I found the number of students who own only a cat as follows: $ D = 33-x-y$ $ C+D+22+8+13+x+y = 100$ $ C+33-x-y+22+8+13+x+y = 100$ $$C=24$$ Hence, 24 students own only a cat. How do I progress from here. How can I find $x$, the number of students who own all three pets, and then find the total number of students who own cats?

- H^2(Z^{n}, S^{1}), Where Z^{n} stands for the direct sum of n copies of Z, S^{1} is the circle. I want to find the 2 nd cohomology of the group Z^{n}.by jjj on October 10, 2024 at 1:38 pm
Basically, I want to find out all the 2 cocyles of the group Z^{n}, where the cocycles are circle valued cocycles.

- Noncommutative conditional Hölder inequalityby ChakalaPipaCiao on October 10, 2024 at 1:37 pm
Does there exist a noncommutative version of the conditional Hölder inequality? I'm thinking of a statement along the lines of: Let $M$ be a finite von Neumann algebra with normal tracial faithful state $\tau: M \rightarrow \mathbb C$ and $E: M \rightarrow N$ a conditional expectation onto a von Neumann subalgebra $N \subset M$. Do we have an inequality of the form $$ \tau(E(\lvert xy \rvert)) \leq \tau(E(\lvert x \rvert^p))^{1/p} \tau(E(\lvert y \rvert)^q)^{1/q} $$ for $p, q \geq 1$ with $\frac{1}{p} + \frac{1}{q} = 1$ and $x,y \in M$?

- The common closure of two metric spaces is also the closure of their intersectionby Ferdinand on October 10, 2024 at 1:32 pm
$(X_1,d_1), (X_2, d_2)$ are two metric space, $V\subset X_1\cap X_2$ is dense in $(X_1,d_1)$, and dense in $(X_2,d_2)$. Prove that $V$ is dense in $(X_1\cap X_2 ,d_1+d_2)$. My attempt: For each $x\in X_1\cap X_2$, I try two find two sequence $\{u_m\}$ and $\{v_m\}$ such that $d_1(u_m,x)\to 0$ and $d_2(v_m,x)\to 0$. Then for every $k$, I take subsequence such that $d_1(u_{m_k},x)<\frac1k, d_2(v_{m_k},x)<\frac1k$. Then if I can also conclude that $d_2(u_{m_k},x)$ and $d_1(v_{m_k},x)$ are also small, I can take element from $B(u_{m_k},\frac1k)\cap B(v_{m_k},\frac1k)\cap V$. But I have trouble verifying this.

- If we know $\Pr(X=x)=p$ and $\Pr(Y=X)=q$, could we know the relation between $\Pr(Y=x)$ and $p\cdot q$?by hwshiro on October 10, 2024 at 1:31 pm
If we know $\Pr(X=x)=p$ and $\Pr(Y=X)=q$, could we know the relation between $\Pr(Y=x)$ and $p\cdot q$? $X$ and $Y$ are any random variables.

## Surrey Mathematics Research Blog The blog on research in mathematics at the University of Surrey

- David Lloyd gives virtual seminar to the SIAM activity group on waves and patternsby Tom Bridges on October 9, 2024 at 5:18 pm
The SIAM Activity Group on Nonlinear Waves and Coherent Structures (link here) invited David Lloyd to give a talk in their virtual seminar series (link here), which is broadcast internationally. The seminar took place on Tuesday 8 October at 12 noon EST (5pm in the UK). The title was “Localized Multi-Dimensional Patterns“. In it, Dave

- Paper of Dominic Stone and Sergey Zelik on analysis of the Navier Stokes equations published in Doklady Maths Journalby Tom Bridges on October 8, 2024 at 10:46 am
The paper “Multi-vortices and lower bounds for the attractor dimension of 2D Navier-Stokes equations“, co-authored by A.G. Kostianko (Zhejiang Normal University), A.A. IIlyin (Kelysh Institute Moscow), D. Stone, and S.V. Zelik, has been published in the Doklady Mathematics Journal. The paper presents a new method for obtaining lower bounds for the dimension of attractors for

- Anne Skeldon speaks at major conference of the European Sleep Research Society in Sevilleby Tom Bridges on September 30, 2024 at 9:26 am
Last week (24-27 September) Anne Skeldon was in Seville Spain for the 27th Congress of the European Sleep Research Society, designated Sleep Europe 2024 (link here). The event had more than 3500 participants from 80 countries. Anne ran a symposium session on “From data to clinical application: Identifying sleep and circadian phenotypes”. There were 4

- Polina Vytnova and Sergey Zelik speak at Dynamics Days 2024 in Shanghaiby Tom Bridges on September 27, 2024 at 3:06 pm
Dynamics Days 2024 in Shanghai was held on Sunday 8th September, hosted by Donghua University and organised by Prof Chunyou Sun (who visited the University of Surrey in September 2018). Polina Vytnova gave a talk on “Apollonian Circles“, and Sergey Zelik gave a talk on “Determining functionals depending on pressure for 2D Navier-Stokes equations“. Other

- Polina Vytnova visits Lanzhou, Beijing, and Zhejiang in 3-week research tour of Chinaby Tom Bridges on September 25, 2024 at 10:42 am
Polina Vytnova was in China for three weeks this autumn (29 August to 20 September) travelling across China to attend conferences and engage in research interaction. At Lanzhou she attended the summer school organised by Sergey Zelik (link here). She then travelled to Shanghai for Dynamics Days 2024 (link here). She then hopped on a

## FlowingData Strength in Numbers

- Hurricane Watchby Nathan Yau on October 9, 2024 at 5:32 pm
Given the topic and situation in Florida, I'm making this issue public. Hurricane Milton is en route.Tags: hurricane, possibilities, uncertainty

- Seen from space: Hurricane Milton approachesby Nathan Yau on October 8, 2024 at 11:54 pm
NOAA has a viewer for their GOES (Geostationary Operational Environmental Satellite) system, which…Tags: hurricane, NOAA, satellite imagery

- Hurricane Milton potential threatsby Nathan Yau on October 8, 2024 at 7:23 pm
Hurricane Milton continues towards Florida, estimated to make landfall on October 9, 2024…Tags: Bloomberg, flood, hurricane, uncertainty

- FlowingData Membership Updateby Nathan Yau on October 8, 2024 at 2:00 pm
Short version: Members make FlowingData possible, and it’s a lot easier to support…

- Preparing for a hurricane, a visual guideby Nathan Yau on October 8, 2024 at 7:25 am
For The Washington Post, N. Kirkpatrick, Aaron Steckelberg, and Leslie Shapiro provide a…Tags: emergency, hurricane, Washington Post

## AnnMaria's Blog Words from the Prez

- Why won’t SAS see this character variable is equal?by annmaria on July 16, 2023 at 6:13 pm
When I selected observations where the character variable was equal to a certain value, SAS returned 0 observations - but I knew there should be a match!

- Macros, SQL and Reading CSV with SAS – Part 1by annmaria on December 27, 2022 at 6:31 am
How can you combine data sets with different variable lengths, different unique identifiers, in a different format than last year? It's easy.

- Converting to fiscal years, using SASby annmaria on January 30, 2022 at 5:50 am
Creating a new variable for fiscal year with SAS is actually super simple.

- Giving Students Their Money’s Worth Onlineby annmaria on August 23, 2020 at 6:26 am
As someone who has taught for over 30 years, and online for most of the last 7, I can tell you that online courses can actually be better.

- Tomorrow, I will be serious. Today, it’s quarantine clothesby annmaria on April 10, 2020 at 2:57 am
In my first ever post on fashion, I discuss rules for attire in web meetings. Number one: Wear clothes.

## Data & Society Data & Society advances public understanding of the social implications of data-centric technologies and automation.

- Alice Marwick Joins Data & Society as Director of Researchby Alessandra Erawan on September 11, 2024 at 1:21 pm
- Data & Society Announces Nine New Affiliatesby Alessandra Erawan on June 12, 2024 at 6:11 pm
- Data & Society Welcomes Maia Woluchem as Program Director of Trustworthy Infrastructuresby Alessandra Erawan on May 28, 2024 at 9:19 pm
New York, NY – May 29, 2024 – Data & Society is pleased to welcome Maia Woluchem as director of the organization’s Trustworthy Infrastructures program. In this role, Woluchem will lead the program’s research on approaches to building trust online and offline, which centers the work of people of color and the experiences of vulnerable

- Ensuring “AI Safety” Begins with Addressing Algorithmic Harms Nowby Alessandra Erawan on March 18, 2024 at 1:53 pm
- Response to RFI Related to NIST’s Assignments Under the AI Executive Orderby Alessandra Erawan on February 14, 2024 at 5:38 pm

## Mathematics – Wolfram Blog News, Views and Insights from Wolfram

- Hypergeometric Functions: From Euler to Appell and Beyondby Tigran Ishkhanyan on January 25, 2024 at 5:35 pm
Hypergeometric series appeared in the mid-seventeenth century; since then, they have played an important role in the development of mathematical and physical theories. Most of the elementary and special functions are members of the large hypergeometric class. Hypergeometric functions have been a part of Wolfram Language since Version 1.0. The following plot shows the implementation

- Get Down to Business with Finite Mathematics in Wolfram Languageby John McNally on December 22, 2023 at 3:41 pm
“There is every reason to expect that the various social sciences will serve as incentives for the development of great new branches of mathematics and that some day the theoretical social scientist will have to know more mathematics than the physicist needs to know today.” —John G. Kemeny, first author of the original textbook on

- Don’t Be Discreet and Learn Discrete Mathematics with Wolfram Languageby Marc Vicuna on November 29, 2023 at 6:00 pm
“The spread of computers and the internet will put jobs in two categories. People who tell computers what to do, and people who are told by computers what to do.” — Marc Andreessen, inventor of the Netscape browser How is data organized in databases? Why are some computer programs faster than others? How can algorithms

- Learn Multivariable Calculus through Incredible Visualizations with Wolfram Languageby Tim McDevitt on November 6, 2023 at 3:57 pm
Multivariable calculus extends calculus concepts to functions of several variables and is an essential tool for modeling and regression analysis in economics, engineering, data science and other fields. Learning multivariable calculus is also the first step toward advanced calculus and follows single-variable calculus courses. Wolfram Language provides world-class functionality for the computation and visualization of

- Expand Your Understanding of Statistics with Wolfram Languageby Jamie Peterson on June 6, 2023 at 4:27 pm
Statistics is the mathematical discipline dealing with all stages of data analysis, from question design and data collection to analyzing and presenting results. It is an important field for analyzing and understanding data from scientific research and industry. Data-driven decisions are a critical part of modern business, allowing companies to use data and computational analyses

- Stack the Odds in Your Favor and Master Probability with Wolfram Languageby Marc Vicuna on March 24, 2023 at 3:46 pm
“I believe that we do not know anything for certain, but everything probably.” —Christiaan Huygens Have you ever wondered how health insurance premiums are calculated or why healthcare is so expensive? Or what led to the financial crisis of 2008? Or whether nuclear power is safe? The answers to these questions require an understanding of

- Active Learning with Wolfram|Alpha Notebook Editionby Jordan Hasler on January 20, 2023 at 8:16 pm
As you may know from your own experience (or perhaps from the literature on education), passively receiving information does not lead to new knowledge in the same way that active participation in inquiry leads to new knowledge. Active learning describes instructional methods that engage students in the learning process. Student participation in the classroom typically

- Wolfram|Alpha Pro Teaches Step-by-Step Arithmetic for All Grade Levelsby AnneMarie Torresen on August 26, 2022 at 3:12 pm
In grade school, long arithmetic is considered a foundational math skill. In the past several decades in the United States, long arithmetic has traditionally been introduced between first and fifth grade, and remains crucial for students of all ages. The Common Core State Standards for mathematics indicate that first-grade students should learn how to add

- Fractional Calculus in Wolfram Language 13.1by Tigran Ishkhanyan on August 12, 2022 at 9:10 pm
What is the half-derivative of x? Fractional calculus studies the extension of derivatives and integrals to such fractional orders, along with methods of solving differential equations involving these fractional-order derivatives and integrals. This branch is becoming more and more popular in fluid dynamics, control theory, signal processing and other areas. Realizing the importance and potential