Pics:quote:Four is the smallest composite number, its proper divisors being 1 and 2. Four is also a highly composite number. The next highly composite number is 6.
Four is the second square number, the second centered triangular number.
4 is the smallest squared prime (p2) and the only even number in this form. It has an aliquot sum of 3 which is itself prime. The aliquot sequence of 4 has 4 members (4, 3, 1, 0) and is accordingly the first member of the 3-aliquot tree.
Only one number has an aliquot sum of 4 and that is squared prime 9.
The prime factorization of four is two times two.
Four is the smallest composite number that is equal to the sum of its prime factors. (As a consequence of this, it is the smallest Smith number). However, it is the largest (and only) composite number n for which is false.
It is also a Motzkin number.
In addition, 2 + 2 = 2 × 2 = 22 = 4. Continuing the pattern in Knuth's up-arrow notation, , and so on, for any number of up arrows.
A four-sided plane figure is a quadrilateral (quadrangle) or square, sometimes also called a tetragon. A circle divided by 4 makes right angles. Because of it, four (4) is the base number of plane (mathematics). Four cardinal directions, four seasons, duodecimal system, and vigesimal system are based on four.
A solid figure with four faces is a tetrahedron. The regular tetrahedron is the simplest Platonic solid. A tetrahedron, which can also be called a 3-simplex, has four triangular faces and four vertices. It is the only self-dual regular polyhedron.
Four-dimensional space is the highest-dimensional space featuring more than three convex regular figures:
Two-dimensional: infinitely many convex regular polygons.
Three-dimensional: five convex regular polyhedra (the five Platonic Solids).
Four-dimensional: six convex regular polychora.
Five-dimensional and every higher-dimensional: three regular convex polytopes (regular simplexes, hypercubes, cross-polytopes).
Four-dimensional differential manifolds have some unique properties. There is only one differential structure on except when n = 4, in which case there are uncountably many.
The smallest non-cyclic group has four elements; it is the Klein four-group. Four is also the order of the smallest non-trivial groups that are not simple.
Four is the maximum number of dimensions of a real division algebra (the quaternions), by a theorem of Ferdinand Georg Frobenius.
The four-color theorem states that a planar graph (or, equivalently, a flat map of two-dimensional regions such as countries) can be colored using four colors, so that adjacent vertices (or regions) are always different colors.[1] Three colors are not, in general, sufficient to guarantee this. The largest planar complete graph has four vertices.
Lagrange's four-square theorem states that every positive integer can be written as the sum of at most four square numbers. Three are not always sufficient; 7 for instance cannot be written as the sum of three squares.
Four is the first positive non-Fibonacci number.
Each natural number divisible by 4 is a difference of squares of two natural numbers, i.e. 4x = y2 − z2.
Four is an all-Harshad number and a semi-meandric number.
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4 quoterquote:Op dinsdag 20 juli 2010 03:27 schreef theghostrider het volgende:
Andrei Novikov: The Four Horsemen and War in the Caucasus
http://borzeawitch-ivil.tripod.com/id12.htmlquote:4 mensen staan voor eerlijk hardwerkende, betrouwbare mensen , die beschikken over een goed organisatie-talent. 4-mensen zijn DE ENGELBEWAARDERS en zijn eerlijk in alles wat ze doen waardoor ze vaak een hoge prijs betalen voor het succes dat ze behalen.
quote:Numerology Number 4 - Boring Builders
A Look at the Symbolism and Personality of Four
Sep 12, 2009 John Culbertson
Numerology Number 4 - Boring Builders - Jorge VicenteWant to understand numerology number four? This boring builder is known for holding people and situations together no matter the crisis. Pity they tend to be too serious.
The symbolism of numerology number four is represented best by the square. The square represents the order of the universe and is seen as a stable and sturdy structure. As long as all four sides of the square remains strong and work together it represents the idea of stability, but when one of those sides disappears or collapses, the rest of the structure is at risk of crumbling and falling apart.
Positive Personality Aspects of Numerology Number 4
There is no number in numerology that is more stable and steady than the number four. In numerology personality analysis, the number four people are the ones that have a tendency to hold everything together. No matter how stressful or difficult a crisis situation may seem, the boring builders are born to know how to handle crisis situation in a calm, cool, and collected way.
The number four is also very practical and methodical. A strong determination resides within these people. Discipline, stamina, and the ability to stick with things to the bitter end are all positive personality traits of the numerology number four. One thing is for certain, those people that are blessed to have a four person in their life can be sure that they’ll have a strong sense of security that will constantly follow them.
Read more at Suite101: Numerology Number 4 - Boring Builders: A Look at the Symbolism and Personality of Four http://newage.suite101.co(...)ilders#ixzz0uBN8vPCg
http://www.fortunesnow.com/newsite/library/numer.aspquote:Since ancient times, the number four has been associated with the four elements of earth, air, fire and water. The natural world in itself is composed of four, as there are four seasons in a year. Therefore, the number four is a representative of the natural world and that involved with earth and other earthly figures. In some cultures, the number four is affiliated with death, since as there are four seasons, with spring being the birth of new life, and winter being the death of life.
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quote:Op dinsdag 20 juli 2010 03:43 schreef KermitKikker het volgende:
Je hebt echt helemaal niks te doen heSPOILEROm spoilers te kunnen lezen moet je zijn ingelogd. Je moet je daarvoor eerst gratis Registreren. Ook kun je spoilers niet lezen als je een ban hebt.
Wie nimmer dwaalt, wordt nooit verstandig
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भूत सवार
goed bezigquote:Op dinsdag 20 juli 2010 03:45 schreef theghostrider het volgende:
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Wie nimmer dwaalt, wordt nooit verstandig
quote:Numerology is a metaphysical science of numbers asserting that every object and living being within the universe can be explained, revealed and reflected through numbers. Numerologie is een metafysische wetenschap van de getallen die beweert dat ieder voorwerp en levend wezen in het heelal verklaard kan worden, is gebleken en tot uiting door de nummers. Numerology assign a single digit numerical value to every letter, month, day, year etc. and then uses these number to predict & analyze the individual's characteristics. Numerologie waarde toe te kennen een enkele cijfers op elke brief, dag, maand, jaar, enz. en dan maakt gebruik van deze getallen te voorspellen en analyseren van de kenmerken van het individu. Astro-Numerology is the synthesis of Astrology & Numerology, the perfect integration between the signs of the havens and the science of numbers. Astro-numerologie is de synthese van Astrologie & Numerologie, de perfecte integratie tussen de tekens van de havens en de wetenschap der getallen. Every number represents a planet, which is as follows:- Elk cijfer vertegenwoordigt een planeet, die luidt als volgt: -
1 ONE SUN Zon Originator Originator
2 TWEE MOON MOON Peace Maker Peace Maker
3 DRIE JUPITER JUPITER Talented Getalenteerd
[color=red] 4 VIER URANUS URANUS Conservative Conservatief [/color]
5 VIJF MERCURY KWIK Non Conformist Niet Conformist
6 SIX VENUS VENUS Romantic Romantiek
7 ZEVEN NEPTUNE NEPTUNE Intellectual Intellectueel
8 ACHT SATURN SATURN Big Shot Big Shot
9 NEGEN MARS MARS Performers Performers
1- Number one people can be very critical of themselves and others. 1 - Aantal mensen kunnen een zeer kritisch tegenover zichzelf en anderen. They have issues surrounding time, creativity, independence, personal safety, and perfection. Ze hebben problemen rond de tijd, creativiteit, onafhankelijkheid, persoonlijke veiligheid en perfectie.
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2- Number two people have issues involving their sense of well being, communication, and balance. 2 - Nummer twee mensen hebben problemen met hun gevoel van welzijn, communicatie, en het evenwicht. They enjoy doing things for others and may find themselves juggling responsibilities. Ze genieten van dingen doen voor anderen en kan zich bevinden jongleren verantwoordelijkheden.
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3- Number three people have issues involving your personal power, balance, money, abundance, and commitment. They may need to constantly evaluate whether they are working to satisfy their needs or to inflate their egos. 3 - Nummer drie mensen hebben problemen met betrekking tot uw persoonlijke kracht, balans, geld, overvloed, en betrokkenheid. Zij kunnen noodzaak om voortdurend te evalueren of ze werken om hun behoeften te voldoen of om hun ego's opgeblazen.
4- Number Four people have issues that involve love, forgiveness, and hope. 4 - Aantal Vier mensen hebben problemen dat vergeving te betrekken liefde en hoop. Structure is very important and a good solid support system is often needed. Structuur is erg belangrijk en een goede solide systeem is vaak nodig.
5- Number Five people have issues involving expression, will power, truth, and education. 5 - Aantal Vijf mensen hebben problemen met betrekking tot expressie, wilskracht, waarheid, en onderwijs. They can be excellent problem solvers, as they tend to be analytical. Ze kunnen uitstekend probleemoplossers, omdat zij meestal te analytisch.
6- Number six people have issues involving support, compassion, dreams, inspiration and hope. 6 - Nummer zes mensen hebben problemen met betrekking tot steun, medeleven, dromen, inspiratie en hoop. They can be great achievers if they do not let their fears chain them down. Ze kunnen groot presteren als ze niet laat hun angsten keten ze naar beneden.
7 - Nummer zeven mensen hebben problemen met wijsheid, leiderschap, controle en vrijheid. These people love to be the center of attention and enjoy positions of authority/responsibility that allows them to interact with a wide range of people. Deze mensen houden de aandacht van het centrum van en gezag genieten posities van / verantwoordelijkheid die hen in staat stelt te communiceren met een breed scala van mensen. Power can go to their heads. Macht kan naar hun hoofden.
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8- Number eight people have issues involving stamina, courage and determination. 8 - Nummer acht mensen hebben problemen met uithoudingsvermogen, moed en vastberadenheid. These people can be great public speakers as they can be very motivational Deze mensen kunnen grote publieke sprekers als ze kunnen zeer motiverend
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9- Number nine people have issues involving patience, self- determination, learning and planning. 9 - Nummer negen mensen hebben problemen met geduld, zelfbeschikking, leren en planning. They can be very good personal caregivers, as they tend to have a great deal of empathy & compassion. Ze kunnen heel goede persoonlijke verzorgers, omdat ze de neiging om medelijden met veel empathie &.
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