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In [[geometry]], '''Plücker's conoid''' is a [[ruled surface]] named after the German mat By using [[cylindrical coordinates]] in space, we can write the above function into parametric equations ...

{{Short description|Unsolved geometry problem about planar regions}} ...[[congruence (geometry)|rotated and translated]] to fit inside the region. In some variations of the problem, the region is restricted to be [[convex set ...

{{Short description|Problem in discrete geometry}} ...nearly-linear number of distinct distances. It was posed by [[Paul Erdős]] in 1946<ref name="Erdos1946">{{cite journal ...

...body is a [[parallelepiped]]. There also exists an equivalent formulation in terms of the number of floodlights needed to illuminate the body. ...ure (graph theory)|Hadwiger conjecture]] concerning [[graph coloring]]—and in some sources the geometric Hadwiger conjecture is also called the '''Levi–H ...

...h]] whose [[shortest path]] distances obey [[Ptolemy's inequality]], which in turn was named after the [[Roman Greece|Greek]] [[astronomer]] and [[mathem ...e, the [[gem graph]] (3-fan) in the illustration is not Ptolemaic, because in this graph {{math|1=''d''(''u'',''w'')''d''(''v'',''x'') = 4}}, greater tha ...

...ndard tool in [[discrete geometry]] and in the analysis of [[Computational geometry|geometric algorithms]].<ref>{{harvtxt|Sharir|Agarwal|1995}}, pp. x and 2.</ #No two consecutive values in the sequence are equal to each other. ...

...their importance in [[mathematical analysis]], [[functional analysis]], [[geometry]], [[physics]], or other applications. ...e theory of [[Lie group]]s and [[Lie algebra]]s, as well as certain topics in [[mathematical physics]]. ...

{{Short description|Circle packing arranged in spirals}} ...ration.png|thumb|upright=1.3|A Doyle spiral of type (8,16) printed in 1911 in ''[[Popular Science]]'' as an illustration of [[phyllotaxis]].{{r|emch}} On ...

This is a '''list of notable Italian scientists''' organized by the era in which they were active. ...0&nbsp;BC–460&nbsp;BC), İtalian-Greek philosopher, defender of rationalism in philosophy ...