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Question Number 3850 by Rasheed Soomro last updated on 22/Dec/15

How many dimention/s does the point have?

$${How}\:{many}\:{dimention}/{s}\:{does}\:{the}\:{point}\:{have}? \\ $$

Commented by prakash jain last updated on 22/Dec/15

In 3D cartesian coordinate you need (x,y,z)  to uniquely describe a point.

$$\mathrm{In}\:\mathrm{3D}\:\mathrm{cartesian}\:\mathrm{coordinate}\:\mathrm{you}\:\mathrm{need}\:\left({x},{y},{z}\right) \\ $$$$\mathrm{to}\:\mathrm{uniquely}\:\mathrm{describe}\:\mathrm{a}\:\mathrm{point}. \\ $$

Commented by Rasheed Soomro last updated on 22/Dec/15

In 2D   (x,y) is needed to describe apoint.  Does this mean that a point can be considered  of any dimention/s ?

$$\mathrm{In}\:\mathrm{2D}\:\:\:\left(\mathrm{x},\mathrm{y}\right)\:\mathrm{is}\:\mathrm{needed}\:\mathrm{to}\:\mathrm{describe}\:\mathrm{apoint}. \\ $$$$\mathrm{Does}\:\mathrm{this}\:\mathrm{mean}\:\mathrm{that}\:\mathrm{a}\:\mathrm{point}\:\mathrm{can}\:\mathrm{be}\:\mathrm{considered} \\ $$$$\mathrm{of}\:\mathrm{any}\:\mathrm{dimention}/\mathrm{s}\:? \\ $$

Commented by 123456 last updated on 22/Dec/15

0

$$\mathrm{0} \\ $$

Commented by prakash jain last updated on 22/Dec/15

A point itself is dimensionless (L^0 ).  Positioning of point or line or any figure  in n−dimension space requires information  about all dimensions.

$$\mathrm{A}\:\mathrm{point}\:\mathrm{itself}\:\mathrm{is}\:\mathrm{dimensionless}\:\left(\mathrm{L}^{\mathrm{0}} \right). \\ $$$$\mathrm{Positioning}\:\mathrm{of}\:\mathrm{point}\:\mathrm{or}\:\mathrm{line}\:\mathrm{or}\:\mathrm{any}\:\mathrm{figure} \\ $$$$\mathrm{in}\:{n}−\mathrm{dimension}\:\mathrm{space}\:\mathrm{requires}\:\mathrm{information} \\ $$$$\mathrm{about}\:\mathrm{all}\:\mathrm{dimensions}. \\ $$

Commented by Rasheed Soomro last updated on 22/Dec/15

Is  ′ the point has no dimention ′ is  a postulate  about point?  [0,1] is anologus to line segment  (−∞,+∞) is anologus to line,I think.

$${Is}\:\:'\:{the}\:{point}\:{has}\:{no}\:{dimention}\:'\:{is} \\ $$$${a}\:\boldsymbol{\mathrm{postulate}}\:\:{about}\:{point}? \\ $$$$\left[\mathrm{0},\mathrm{1}\right]\:{is}\:{anologus}\:{to}\:{line}\:{segment} \\ $$$$\left(−\infty,+\infty\right)\:{is}\:{anologus}\:{to}\:{line},{I}\:{think}. \\ $$

Commented by 123456 last updated on 22/Dec/15

a line is made by inifnite number of points  example:  suppose that each number is a point, then  look at  [0,1]  its a line, and you can choose infinite  numbers from these line

$$\mathrm{a}\:\mathrm{line}\:\mathrm{is}\:\mathrm{made}\:\mathrm{by}\:\mathrm{inifnite}\:\mathrm{number}\:\mathrm{of}\:\mathrm{points} \\ $$$$\mathrm{example}: \\ $$$$\mathrm{suppose}\:\mathrm{that}\:\mathrm{each}\:\mathrm{number}\:\mathrm{is}\:\mathrm{a}\:\mathrm{point},\:\mathrm{then} \\ $$$$\mathrm{look}\:\mathrm{at} \\ $$$$\left[\mathrm{0},\mathrm{1}\right] \\ $$$$\mathrm{its}\:\mathrm{a}\:\mathrm{line},\:\mathrm{and}\:\mathrm{you}\:\mathrm{can}\:\mathrm{choose}\:\mathrm{infinite} \\ $$$$\mathrm{numbers}\:\mathrm{from}\:\mathrm{these}\:\mathrm{line} \\ $$

Commented by Filup last updated on 23/Dec/15

A point is dimensionless but it points  in all directions

$${A}\:\mathrm{point}\:\mathrm{is}\:\mathrm{dimensionless}\:\mathrm{but}\:\mathrm{it}\:\mathrm{points} \\ $$$$\mathrm{in}\:\mathrm{all}\:\mathrm{directions} \\ $$

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