25
https://plus.maths.org/content/issue/issue/25
enHow maths can make you rich and famous: Part II
https://plus.maths.org/content/how-maths-can-make-you-rich-and-famous-part-ii
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Chris Budd </div>
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One million dollars is waiting to be won by anyone who can solve one of the grand mathematical challenges of the 21st century. In the second of two articles, Chris Budd looks at the well-posedness of the <b>Navier-Stokes equations</b>. </div>
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<div class="pub_date">May 2003</div>
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<h2>A brief history of problem-solving</h2>
<p>Despite the impression given by many textbooks, teachers and internet articles, we understand much less about mathematics than is commonly thought. In fact, maths is littered with problems that we cannot solve.<p><a href="https://plus.maths.org/content/how-maths-can-make-you-rich-and-famous-part-ii" target="_blank">read more</a></p>https://plus.maths.org/content/how-maths-can-make-you-rich-and-famous-part-ii#comments25aerodynamicsangle trisectioncircle-squaringClay Institute Millennium Prize Problemsdoubling the cubeFermat's Last Theoremfluid mechanicshilbert problemsmathematical modellingnavier-stokes equationsWed, 30 Apr 2003 23:00:00 +0000plusadmin2223 at https://plus.maths.org/contentThe crystal ball
https://plus.maths.org/content/crystal-ball
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Helen Joyce </div>
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<img class="imagefield imagefield-field_abs_img" width="100" height="100" alt="" src="https://plus.maths.org/content/sites/plus.maths.org/files/issue25/features/daykin/icon.jpg?1051743600" /> </div>
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If you had a crystal ball that allowed you to see your future, what would you arrange differently about your finances? <i>Plus</i> talks to the Government Actuary, Chris Daykin about the <b>pensions crisis</b>, and how actuaries use statistical and modelling techniques to plan for all our futures. </div>
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<div class="pub_date">May 2003</div>
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<blockquote><i>If I had my way, I would write the word "insure" upon the door of every cottage and upon the blotting book of every public man, because I am convinced, for sacrifices so small, families and estates can be protected against catastrophes which would otherwise smash them up forever.</i>
<p><i>It is the duty to arrest the ghastly waste, not merely of human happiness, but national health and strength, which follows when, through the death of the breadwinner, the frail boat in which the family are embarked<p><a href="https://plus.maths.org/content/crystal-ball" target="_blank">read more</a></p>https://plus.maths.org/content/crystal-ball#comments25actuarial mathematicsforecastinginsuranceLife insurancemathematical modellingmathematics in the mediamultistate modellingpensionstatistical predictionstochastic processWed, 30 Apr 2003 23:00:00 +0000plusadmin2224 at https://plus.maths.org/contentA whirlpool of numbers
https://plus.maths.org/content/whirlpool-numbers
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Nicholas Mee </div>
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The <b>Riemann Hypothesis</b> is probably the hardest unsolved problem in all of mathematics, and one of the most important. It has to do with prime numbers - the building blocks of arithmetic. Nick Mee, together with Sir Arthur C. Clarke, tells us about the patterns hiding inside numbers. </div>
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<div class="pub_date">May 2003</div>
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<p><a href="https://plus.maths.org/content/whirlpool-numbers" target="_blank">read more</a></p>https://plus.maths.org/content/whirlpool-numbers#comments25Arthur C ClarkecryptographyFundamental theorem of arithmeticnumber theoryprime numberprime number distributionprime number spiralRiemann hypothesisRiemann zeta functionzeta functionWed, 30 Apr 2003 23:00:00 +0000plusadmin2225 at https://plus.maths.org/contentModel behaviour
https://plus.maths.org/content/model-behaviour
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Phil Wilson </div>
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To study a system, mathematicians begin by identifying its most crucial elements, and try to describe them in simple mathematical terms. As Phil Wilson tells us, this simplification is the essence of <b>mathematical modelling</b>. </div>
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<p><i>The essence of mathematical modelling is simplification. Natural events are the result of multiple interrelated processes, themselves dependent on a history of other processes, in an almost endless web of cause and effect. To study a system, the mathematical modeller begins by identifying the crucial aspects of the system, those that seem to characterize it. Initially, she need not concern
herself with how such characteristics come to be, only with how to describe them in simple mathematical terms.</i></p><p><a href="https://plus.maths.org/content/model-behaviour" target="_blank">read more</a></p>https://plus.maths.org/content/model-behaviour#comments25chaosdifferential equationdimensionless groupsepidemiologyhooke's lawmathematical modellingmedicine and healthWed, 30 Apr 2003 23:00:00 +0000plusadmin2226 at https://plus.maths.org/contentCareer interview: Primary teacher
https://plus.maths.org/content/career-interview-primary-teacher
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Helen Joyce </div>
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<p><i>For much of her 27 years as a primary school teacher, Maureen Matthews has been a maths coordinator, with particular responsibility for maths teaching across her whole school. But, as she tells Plus, it wasn't until she started teaching that she even realised that she had any talent for maths.</i></p>
<h2>The first steps</h2>
<p><!-- FILE: include/rightfig.html --></p><p><a href="https://plus.maths.org/content/career-interview-primary-teacher" target="_blank">read more</a></p>https://plus.maths.org/content/career-interview-primary-teacher#comments25career interviewHealth & Societymathematics and artmathematics enrichmentpublic understanding of mathematicsScience & EngineeringWed, 30 Apr 2003 23:00:00 +0000plusadmin2411 at https://plus.maths.org/contentPuzzle page
https://plus.maths.org/content/puzzle-page-31
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Can money turn the monarchy upside-down? </div>
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<div class="pub_date">May 2003</div>
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This issue's puzzle is from <i>Mindbenders and brainteasers</i> by David Wells and Rob Eastaway, <a href="/issue25/reviews/book1/index.html">reviewed</a> in this issue of <i>Plus</i>.
<h2>Rolling with money</h2>
Sue was fiddling wth two 10p coins, rolling one of them round the other. Martin came over. "You see these two identical coins?" said Sue.<div class="field field-type-nodereference field-field-sol-link">
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<p><a href="https://plus.maths.org/content/puzzle-page-31" target="_blank">read more</a></p>https://plus.maths.org/content/puzzle-page-31#comments25puzzleWed, 30 Apr 2003 23:00:00 +0000plusadmin2874 at https://plus.maths.org/content'Kepler's Conjecture'
https://plus.maths.org/content/keplers-conjecture
<div class="pub_date">May 2003</div>
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<h2>Kepler's Conjecture: How some of the greatest minds in history helped solve one of the oldest math problems in the world</h2>
<h3>By George Szpiro</h3>
<p>George Szpiro has a most unusual day job for someone writing about the abstract world of pure mathematics.<p><a href="https://plus.maths.org/content/keplers-conjecture" target="_blank">read more</a></p>https://plus.maths.org/content/keplers-conjecture#comments25book reviewWed, 30 Apr 2003 23:00:00 +0000plusadmin3243 at https://plus.maths.org/content'Dissections: Plane and Fancy'
https://plus.maths.org/content/dissections-plane-and-fancy
<div class="pub_date">May 2003</div>
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<h2>Dissections: Plane and Fancy</h2>
<p>Geometric dissection is the mathematical art of cutting figures into pieces that can be rearranged to form other figures, preferably using as few pieces as possible.<p><a href="https://plus.maths.org/content/dissections-plane-and-fancy" target="_blank">read more</a></p>https://plus.maths.org/content/dissections-plane-and-fancy#comments25book reviewWed, 30 Apr 2003 23:00:00 +0000plusadmin3244 at https://plus.maths.org/content'Four Colours Suffice'
https://plus.maths.org/content/four-colours-suffice
<div class="pub_date">May 2003</div>
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<h2>Four Colours Suffice</h2>
<p>The Four Colour Theorem - the statement that four colours suffice to fill in any map so that neighbouring countries are always coloured differently - has had a long and controversial history.<p><a href="https://plus.maths.org/content/four-colours-suffice" target="_blank">read more</a></p>https://plus.maths.org/content/four-colours-suffice#comments25book reviewWed, 30 Apr 2003 23:00:00 +0000plusadmin3245 at https://plus.maths.org/content'Mindbenders and Brainteasers'
https://plus.maths.org/content/mindbenders-and-brainteasers
<div class="pub_date">May 2003</div>
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<h2>Mindbenders and Brainteasers</h2>
Many people, when they look back, can pinpoint the precise moment when their interest in mathematics was awakened - it was when they found a puzzle that intrigued them.<p><a href="https://plus.maths.org/content/mindbenders-and-brainteasers" target="_blank">read more</a></p>https://plus.maths.org/content/mindbenders-and-brainteasers#comments25book reviewWed, 30 Apr 2003 23:00:00 +0000plusadmin3246 at https://plus.maths.org/contentEditorial
https://plus.maths.org/content/pluschat-1
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<li>Optional maths - should students be able to give up maths at age 14?</li>
<li>Outer space - In what will now be a regular feature, mathematician and cosmologist John D. Barrow shares some maths that's amused and intrigued him.</li>
<li>Readers' corner- More Strange activities for last issue's Ship of Fools!</li>
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<div class="pub_date">May 2003</div>
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<h2>This issue's <i>Plus</i>chat topics</h2>
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<li><a href="#optional">Optional maths</a> - should students be able to give up maths at age 14?</li>
<li><a href="#john">Outer space</a> - In what will now be a regular feature, mathematician and cosmologist John D.<p><a href="https://plus.maths.org/content/pluschat-1" target="_blank">read more</a></p>25editorialInformation theoryinnate mathematical abilitymental arithmeticphysicspublic understanding of mathematicssearch engineWed, 30 Apr 2003 23:00:00 +0000plusadmin4877 at https://plus.maths.org/contentPlus Magazine
https://plus.maths.org/content/plus-magazine-32
<p><a href="https://plus.maths.org/content/plus-magazine-32" target="_blank">read more</a></p>25editorialWed, 30 Apr 2003 23:00:00 +0000plusadmin5115 at https://plus.maths.org/content/issue25
https://plus.maths.org/content/issue25
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<span class="date-display-single">May 2003</span> </div>
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In what will now be a regular feature, mathematician and cosmologist John D. Barrow shares some maths that's amused and intrigued him.25indexWed, 01 Dec 1999 00:00:00 +0000plusadmin4737 at https://plus.maths.org/content