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# All posts tagged "slider"

• Snapshots of modern mathematics

The Mathematisches Forschungsinstitut Oberwolfach (MFO) publishes “snapshots of modern mathematics“ openly accessible on the internet. The snapshots are brief, understandable articles on current mathematical research topics. They address themselves at teachers, secondary school students, science journalists as...

• Posted February 8, 2016
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• The top 10 mathematical achievements of the last 5ish years, maybe

I have recently been going through my book Maths 1001 making updates for a forthcoming foreign edition (of which more in future). So I have been looking over mathematical developments since approximately 2009. Thus, I present ten...

• Posted February 3, 2016
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• What is mathematics for Ehrhard Behrends

This is a very difficult question, and there is probably no one answer to which all mathematicians would subscribe. We have collected a number of partial answers. There is great variation in the ambitions of the authors...

• Posted February 1, 2016
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• The four ducks trick

The described trick is a “ducky” version of the trick known as Yates’ Four-Divination, which is described in Martin Gardner’s book “Mathematics, Magic and Mistery” (Dover Publ., New York, 1956). by Franka Miriam Brueckler Move the ducks! There...

• Posted February 1, 2016
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• A Quick Arithmetic Trick

This is a very quick trick for which you need no equipment, and can thus perform it spontaneously. by Franka Miriam Brueckler For the purposes of this short text, by number we mean a positive integer. The...

• Posted February 1, 2016
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• Magic number 9

Most people remember from school: A number is divisible by 9 if and only if the sum of its digits is divisible by 9. by Franka Miriam Brueckler For example, 256482 is divisible by 9 because 2...

• Posted February 1, 2016
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• A symmetric trick

One of the tricks that always impress the audience who do not know the simple geometry behind it is this simple card trick. It can be done quickly, and works well in all settings by Franka Miriam...

• Posted February 1, 2016
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• Prime and Composite

A great simple card trick involving two spectators is this one. When disclosed, it reminds them of something they should have learned in school…  by Franka Miriam Brueckler …the difference between prime and composite numbers, which can...

• Posted February 1, 2016
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• Orden en el universo!

Select 9 consecutive cards of your favorite suit, e.g., the diamonds from ace to 9, and present this well-ordered set to the audience. Some card tricks using math.  by Ehrhard Behrends Select 9 consecutive cards of your...

• Posted February 1, 2016
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