A PopSugar and BookBub Most Anticipated Romance of 2022! How do you solve the Perfect Equation? Add one sharp-tongued mathematician to an aloof, handsome nobleman. Divide by conflicting loyalties and multiply by a daring group of women hell-bent on conducting their scientific experiments. The solution is a romance that will break every rule. Six years ago, Miss Letitia Fenley made a mistake, and she’s lived with the consequences ever since. Readying herself to compete for the prestigious Rosewood Prize for Mathematics, she is suddenly asked to take on another responsibility—managing Athena’s Retreat, a secret haven for England’s women scientists. Having spent the last six years on her own, Letty doesn’t want the offers of friendship from other club members and certainly doesn’t need any help from the insufferably attractive Lord Greycliff. Lord William Hughes, the Viscount Greycliff cannot afford to make any mistakes. His lifelong dream of becoming the director of a powerful clandestine agency is within his grasp. Tasked with helping Letty safeguard Athena’s Retreat, Grey is positive that he can control the antics of the various scientists as well as manage the tiny mathematician—despite their historic animosity and simmering tension. As Grey and Letty are forced to work together, their mutual dislike turns to admiration and eventually to something...magnetic. When faced with the possibility that Athena’s Retreat will close forever, they must make a choice. Will Grey turn down a chance to change history, or can Letty get to the root of the problem and prove that love is the ultimate answer?

In 1988 The Mathematical Intelligencer, a quarterly mathematics journal, carried out a poll to find the most beautiful theorem in mathematics. Twenty-four theorems were listed and readers were invited to award each a 'score for beauty'. While there were many worthy competitors, the winner was 'Euler's equation'. In 2004 Physics World carried out a similar poll of 'greatest equations', and found that among physicists Euler's mathematical result came second only to Maxwell's equations. The Stanford mathematician Keith Devlin reflected the feelings of many in describing it as "like a Shakespearian sonnet that captures the very essence of love, or a painting which brings out the beauty of the human form that is far more than just skin deep, Euler's equation reaches down into the very depths of existence". What is it that makes Euler's identity, eiπ + 1 = 0, so special? In Euler's Pioneering Equation Robin Wilson shows how this simple, elegant, and profound formula links together perhaps the five most important numbers in mathematics, each associated with a story in themselves: the number 1, the basis of our counting system; the concept of zero, which was a major development in mathematics, and opened up the idea of negative numbers; π an irrational number, the basis for the measurement of circles; the exponential e, associated with exponential growth and logarithms; and the imaginary number i, the square root of -1, the basis of complex numbers. Following a chapter on each of the elements, Robin Wilson discusses how the startling relationship between them was established, including the several near misses to the discovery of the formula.

The New York Times bestselling author of The Unhoneymooners returns with a witty and effervescent novel about what happens when two people with everything on the line are thrown together by science—or is it fate? Perfect for fans of The Rosie Project and One Plus One. Single mom Jess Davis is a data and statistics wizard, but no amount of number crunching can convince her to step back into the dating world. Raised by her grandparents—who now help raise her seven-year-old daughter, Juno—Jess has been left behind too often to feel comfortable letting anyone in. After all, her father’s never been around, her hard-partying mother disappeared when she was six, and her ex decided he wasn’t “father material” before Juno was even born. Jess holds her loved ones close, but working constantly to stay afloat is hard...and lonely. But then Jess hears about GeneticAlly, a buzzy new DNA-based matchmaking company that’s predicted to change dating forever. Finding a soulmate through DNA? The reliability of numbers: This Jess understands. At least she thought she did, until her test shows an unheard-of 98% compatibility with another subject in the database: GeneticAlly’s founder, Dr. River Pena. This is one number she can’t wrap her head around, because she already knows Dr. Pena. The stuck-up, stubborn man is without a doubt not her soulmate. But GeneticAlly has a proposition: Get to know him and we’ll pay you. Jess—who is barely making ends meet—is in no position to turn it down, despite her skepticism about the project and her dislike for River. As the pair are dragged from one event to the next as the “Diamond” pairing that could make GeneticAlly a mint in stock prices, Jess begins to realize that there might be more to the scientist—and the science behind a soulmate—than she thought. Funny, warm, and full of heart, The Soulmate Equation proves that the delicate balance between fate and choice can never be calculated.

“Not only does Anholt explain the challenges facing the world with unique clarity, he also provides genuinely new, informative, practical, innovative solutions. . . . The book is a must-read for anyone who cares about humanity's shared future.” —H. E. Mohamed Abdullahi Mohamed (Farmaajo), President of the Federal Republic of Somalia Simon Anholt has spent decades helping countries from Austria to Zambia to improve their international standing. Using colorful descriptions of his experiences—dining with Vladimir Putin at his country home, taking a group of Felipe Calderon's advisors on their first Mexico City subway ride, touring a beautiful new government hospital in Afghanistan that nobody would use because it was in Taliban-controlled territory—he tells how he began finding answers to that question. Ultimately, Anholt hit on the Good Country Equation, a formula for encouraging international cooperation and reinventing education for a globalized era. Anholt even offers a “selfish” argument for cooperation: he shows that it generates goodwill, which in turn translates into increased trade, foreign investment, tourism, talent attraction, and even domestic electoral success. Anholt insists we can change the way countries behave and the way people are educated in a single generation—because that's all the time we have.

Exceptionally clear exposition of an important mathematical discipline and its applications to sociology, economics, and psychology. Topics include calculus of finite differences, difference equations, matrix methods, and more. 1958 edition.

“Anyone can write a blog post, but not everyone can get it liked thirty-five thousand times, and not everyone can get seventy-five thousand subscribers. But the reason we’ve done these things isn’t because we’re special. It’s because we tried and failed, the same way you learn to ride a bike. We tried again and again, and now we have an idea how to get from point A to point B faster because of it.” Three short years ago, when Chris Brogan and Julien Smith wrote their bestseller, Trust Agents, being interesting and human on the Web was enough to build a significant audience. But now, everybody has a platform. The problem is that most of them are just making noise. In The Impact Equation, Brogan and Smith show that to make people truly care about what you have to say, you need more than just a good idea, trust among your audience, or a certain number of fol­lowers. You need a potent mix of all of the above and more. Use the Impact Equation to figure out what you’re doing right and wrong. Apply it to a blog, a tweet, a video, or a mainstream-media advertising cam­paign. Use it to explain why a feature in a national newspaper that reaches millions might have less impact than a blog post that reaches a thousand passionate subscribers. Consider the phenomenally successful British singer Adele. For most musicians, onstage banter basically consists of yelling “Hello, Cleveland!” But Adele connects with her audience, pausing between songs to discuss a falling-out with her friends, or the drama of a break up. Each of these moments comes off as if she were talking directly with you, and you can easily relate. Adele has Impact. As the traditional channels for marketing, selling, and influencing disappear and more people inter­act mainly online, the very nature of attention is changing. The Impact Equation will give you the tools and metrics that guarantee your message will be heard.

Smartly conceived and fast paced, his book offers something for anyone curious about math and its impacts.