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Wolfram Math World: Descartes' Sign Rule
This page gives a good overview of Descartes' Sign Rule, a "method of determining the maximum number of positive and negative real roots of a polynomial."
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Wolfram Math World: Conformal Mapping
This site explains what conformal mapping is, gives alternative names used in reference of this transformation, uses pictured examples to emphasize the particulars of the definition, gives an if statement with regards to conforming...
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Wolfram Science World: Bede, the Venerable
Encyclopedia entry for the English scholar who wrote a history of the early centuries of Anglo-Saxon England and an encyclopedia which consisted largely of excerpts from Pliny the Elder.
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Wolfram Science World: Young, Thomas
This site from ScienceWorld provides a very short but factual biographical sketch of Thomas Young (1773-1829 CE) and describes his most notable scientific discoveries and contributions. Links are also provided throughout for additional...
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Wolfram Science World: Snell, Willebrord
This site from ScienceWorld provides a very short biographical sketch of Willebrord Snell (1591-1626 CE) and describes his most notable scientific discovery, the law of refraction. Links are provided for additional information as well.
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Wolfram Science World: Roemer, Olaf
This ScienceWorld site provides a biographical sketch of Olaf Roemer and describes his most notable scientific discoveries such as the first good estimate of the speed of light.
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Wolfram Science World: Rontgen, Wilhelm
This site from ScienceWorld provides a very short biographical sketch of Wilhelm Rontgen (1845-1923 CE) and describes his most notable scientific discoveries and contributions.
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Wolfram Math World: Power Rule
MathWorld offers a definition of the power rule when taking derivatives of single variable terms. Contains a definition, formula, and links to related terms.
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Wolfram Science World: Fractional Distillation
This website provides the definition.
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Wolfram Math World: Algebraic Function
A short definition for what an algebraic function is.
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Wolfram Math World: Trichotomy Law
From Mathworld a site on trichotomy law. This law tells the three posibilities for real numbers in this short definition.
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Wolfram Math World: Ray
A ray is defined and discussed here. A picture is provided to aide with the definition and key terms are linked.
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Wolfram Math World: Partial Sum
This site gives the defintion of partial sum using the common symbol for summation.
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Wolfram Math World: Inscribed Angle
This site provides not only a definition of inscribed angle but also links to related terms.
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Wolfram Math World: Frustum
Math World site offers the definition of frustum and links to view a frustum of a pyramid, cone, and sphere.
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Wolfram Math World: Perpendicular Vectors
Come to this site to find the transformational matrix to find the vector rotated 90 degrees from the original. The site also states the special relationship between two perpendicular vectors when using the dot product.
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Wolfram Math World: Hyperbolic Geometry
Hyperbolic Geometry is discussed here with specifics on the lines in this geometry. The equations of the lines are represented as well as a desription of the lines. The site has links to other non-Euclidean Geometries.
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Wolfram Math World: Parallel Planes
MathWorld.com gives a definition of parallel planes along with an if and only if (iff) statement to determine if two planes are parallel. The understanding of the dot product and/or cross product is necessary to utilize the iff...
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Wolfram Math World: Scalene Triangles
MathWorld gives a brief definition of scalene triangles and then lists links to related topics and terms.
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Wolfram Math World: Similar Triangles
Find the necessary information to decide if triangles are similar at this MathWorld site.
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Wolfram Math World: Two Column Proof
MathWorld gives a discussion of the use of two-column proofs by high school and middle school students and its relevance to mathematicians.
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Wolfram Math World: Period
This site from MathWorld briefly states the period of a periodic funciton. The site has links to related topics.
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Wolfram Math World: Circumcenter
MathWorld diagrams a triangle with its circumcenter labeled and details how to find the circumcenter with links to the key terms.
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Wolfram Math World: Linear Regression Model
A basic definition for what linear regression is can be found here. Examples of forms of linear regression are also given.