Kategoria BISAC: Mathematics >> Counting & Numeration

We use addition on a daily basis--yet how many of us stop to truly consider the enormous and remarkable ramifications of this mathematical activity? Summing It Up uses addition as a springboard to present a fascinating and accessible look at numbers and number theory, and how we apply beautiful numerical properties to answer math problems. Mathematicians Avner Ash and Robert Gross explore addition's most basic characteristics as well as the addition of squares and other powers before moving onward to infinite series, modular forms, and issues at the forefront of current mathematical...

First and foremost, this is a beautiful story about a girl who learns to count. However, most of us have forgotten how we became skilled counters, and few know that in doing so we also learn concepts from higher mathematics. If you are curious to know why you can count or if you want to do some exercises together with children to help them on their way to start counting, then this is the book for you. There is something for everyone in the book and you will enjoy it as an exploring kid or as a caring parent, as well as a seasoned mathematician. This book illustrates and thoroughly explains...

FOrst och frAmst Ar detta en vacker berAttelse om en flicka som lAr sig att rAkna. Det visar sig dock vara sA att de flesta av oss har glOmt hur vi blev skickliga rAknare. FA vet om att vi dA ocksA lAr oss koncept frAn hOgre matematik. Om ni Ar nyfikna pA varfOr ni kan rAkna eller om ni vill gOra nAgra Ovningar tillsammans med barn fOr att hjAlpa dem pA vAgen mot att rAkna, dA Ar det hAr en bok fOr er. Det finns nAgot fOr alla i boken och den kommer att tilltala utforskande barn och omtAnksamma fOrAldrar, sAvAl som garvade matematiker. Boken illustrerar och fOrklarar genomgAende nAgra...

This open access book describes Smittestopp, the first Norwegian system for digital contact tracing of Covid-19 infections, which was developed in March and early April 2020. The system was deployed after five weeks of development and was active for a little more than two months, when a drop in infection levels in Norway and privacy concerns led to shutting it down.  The intention of this book is twofold.  First, it reports on the design choices made in the development phase.  Second, as one of the only systems in the world that collected population data into a central...