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  2. Cancelling out - Wikipedia

    en.wikipedia.org/wiki/Cancelling_out

    For example, a fraction is put in lowest terms by cancelling out the common factors of the numerator and the denominator. [2] As another example, if a×b=a×c, then the multiplicative term a can be canceled out if a≠0, resulting in the equivalent expression b=c; this is equivalent to dividing through by a.

  3. Wikipedia:Historical archive/How to draw a diagram with ...

    en.wikipedia.org/wiki/Wikipedia:Historical...

    Arial is probably the best to use because its simple lines come out well when the image is rasterised. It’s better not to use annotation to give a diagram a title. Put the diagram inside a table and use the table caption to do it. That way it can easily be changed. Do not be tempted to use the WordArt button next to the text button. WordArt ...

  4. Root system - Wikipedia

    en.wikipedia.org/wiki/Root_system

    The rank of a root system Φ is the dimension of E. Two root systems may be combined by regarding the Euclidean spaces they span as mutually orthogonal subspaces of a common Euclidean space. A root system which does not arise from such a combination, such as the systems A 2, B 2, and G 2 pictured to the right, is said to be irreducible.

  5. Wikipedia talk : Historical archive/How to draw a diagram ...

    en.wikipedia.org/wiki/Wikipedia_talk:Historical...

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Help; Learn to edit; Community portal; Recent changes; Upload file

  6. Weyl group - Wikipedia

    en.wikipedia.org/wiki/Weyl_group

    In mathematics, in particular the theory of Lie algebras, the Weyl group (named after Hermann Weyl) of a root system Φ is a subgroup of the isometry group of that root system. Specifically, it is the subgroup which is generated by reflections through the hyperplanes orthogonal to at least one of the roots, and as such is a finite reflection ...

  7. Weyl character formula - Wikipedia

    en.wikipedia.org/wiki/Weyl_character_formula

    The surprising part of the character formula is that when we compute this product, only a small number of terms actually remain. Many more terms than this occur at least once in the product of the character and the Weyl denominator, but most of these terms cancel out to zero. [5]

  8. Clearing denominators - Wikipedia

    en.wikipedia.org/wiki/Clearing_denominators

    In mathematics, the method of clearing denominators, also called clearing fractions, is a technique for simplifying an equation equating two expressions that each are a sum of rational expressions – which includes simple fractions.

  9. System context diagram - Wikipedia

    en.wikipedia.org/wiki/System_context_diagram

    Example of a system context diagram. [1] A system context diagram in engineering is a diagram that defines the boundary between the system, or part of a system, and its environment, showing the entities that interact with it. [2] This diagram is a high level view of a system. It is similar to a block diagram.