أكاديميا - كولنز - معاجم الجيب العلمية - الرياضيات - انكليزي -فرنسي -عربي الحرف ١_ n

Academia - Collins - Pocket Scientific Dictionaries - Mathematics - English - French - Arabic Letter 1_ N

natural

natural. The set of positive whole numbers (counting numbers) is called natural numbers. The set of natural numbers 1,2,3,4 is often referred to by the symbol N. Natural logarithms are logarithms with base e.

nautical mile
mille m nautique

nautical mile. A nautical mile is a distance of 6080 feet, equal to one minute of an arc measured along a great circle on the Earth's surface. Thus, 60 nautical miles of the great circle subtend an angle of one degree at the center of the Earth.

negative
négatif

Negative. Negative. Negative number A number whose value is less than 0, for example: - 2.5, - 724, - 0.176, - 1/10, are all negative numbers, but 0.001, 176, 3.5, are not negative numbers.

net
volume m étalé

Network. A surface that can be folded to become a solid.

Each of the above shapes forms a cube network, meaning that if these shapes are cut, they can be folded to form cubes.

Triangular pyramid network
Square pyramid network

network
réseau m

Network. A system of points (called nodes) connected by arcs. The network divides the surface into a number of regions. The numbers of nodes, arcs, and regions are connected by Euler's formula:

Nodes + regions = arcs + 2

newton
newton m

Newton. A unit of force named after the famous English mathematician Isaac Newton. The resultant force of 1 newton exerted on a body of mass 1 kilogram produces an acceleration of 1 meter per second per second.

Newton's method
méthode f de Newton

Newton's method. An iterative, step-by-step method for finding the roots of an equation of the form f(x)=0.

If p1 is an approximation of the root, then p2 is the intercept tangent of f at x=p1 with the x-axis, which is more approximate.

node
nœud m

node. A node is a point on a network to which one or more arcs lead.

nonagon
nonagône m

polygon. A polygon with nine sides. A regular polygon has all equal sides, and all of its interior angles are 140°.

normal
normale f

regular. The normal of the arc at any point is the perpendicular line to the tangent at that point.

A line (or vector) is normal to a plane if it is perpendicular to all lines belonging to the plane. In the figure above: a and m are two lines belonging to the plane. The line AB is perpendicular to a and m, and therefore perpendicular to the plane.

notation
notation f

A symbol used in mathematics. Symbols represent quantities, operations, relationships, etc., along with the conventions for their use. For example:

The symbol !5 means 5×4×3×2×1.

The symbol means 1+2+3+4.

nought
zero m

Nothing. Zero. 0 Numeral or zero.

null
null

No. Zero. The empty set is the empty set, denoted by , which is a set with no members. For example, the set of numbers with a negative square is a zero set.

numeral
nombre m

Number. Numbers are symbols used to refer to numbers.

For example:

Arabic numerals: 0,1,2,3,4,5,6,7,8,9.

Roman numerals. I,V,X,L,C,D,M: Roman numerals

numerator
numérateur m

Image (numerator). The top part of a fraction.

For example, the image (numerator) of the fraction 17/4 is 17, while the image (numerator) of 6/13 is 6.