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  2. Raising and lowering indices - Wikipedia

    en.wikipedia.org/wiki/Raising_and_lowering_indices

    It is common convention to use greek indices when writing expressions involving tensors in Minkowski space, while Latin indices are reserved for Euclidean space. Well-formulated expressions are constrained by the rules of Einstein summation: any index may appear at most twice and furthermore a raised index must contract with a lowered index ...

  3. Additional Mathematics - Wikipedia

    en.wikipedia.org/wiki/Additional_Mathematics

    There are two written papers, each comprising half of the weightage towards the subject. Each paper is 2 hours 15 minutes long and worth 90 marks. Paper 1 has 12 to 14 questions, while Paper 2 has 9 to 11 questions. Generally, Paper 2 would have a graph plotting question based on linear law. It was originated in the year 2003 [3]

  4. Cost-of-living index - Wikipedia

    en.wikipedia.org/wiki/Cost-of-living_index

    Since upper and lower bounds of the true cost of living index can be found, respectively, through the Laspeyres and Paasche indices, the geometric average of the two, known as the Fisher price index, is a close approximation of the true cost of living index if the upper and lower bounds are not too far apart. [6]

  5. List of irreducible Tits indices - Wikipedia

    en.wikipedia.org/wiki/List_of_irreducible_Tits...

    In the description, there are given (only for classical groups), a representative of the isogeny class of the group of the given Tits index. The following complete list of all possible Tits indices over those special fields, which are the finite fields, the local and global fields (in any characteristic) is given (see [2] and [3] (with full ...

  6. Atkinson index - Wikipedia

    en.wikipedia.org/wiki/Atkinson_index

    The Atkinson index is defined as: (, …,) = {(=) / (=) / = (,...,) = +where is individual income (i = 1, 2, ..., N) and is the mean income.. In other words, the Atkinson index is the complement to 1 of the ratio of the Hölder generalized mean of exponent 1−ε to the arithmetic mean of the incomes (where as usual the generalized mean of exponent 0 is interpreted as the geometric mean).

  7. Bond market index - Wikipedia

    en.wikipedia.org/wiki/Bond_market_index

    The Frankfurt Bond Market, 1988. A bond index or bond market index is a method of measuring the investment performance and characteristics of the bond market.There are numerous indices of differing construction that are designed to measure the aggregate bond market and its various sectors (government, municipal, corporate, etc.)

  8. Foster–Greer–Thorbecke indices - Wikipedia

    en.wikipedia.org/wiki/Foster–Greer–Thorbecke...

    The Foster–Greer–Thorbecke indices are a family of poverty metrics. The most commonly used index from the family, FGT 2 , puts higher weight on the poverty of the poorest individuals, making it a combined measure of poverty and income inequality and a popular choice within development economics .

  9. Array (data structure) - Wikipedia

    en.wikipedia.org/wiki/Array_(data_structure)

    The number of indices needed to specify an element is called the dimension, dimensionality, or rank of the array. In standard arrays, each index is restricted to a certain range of consecutive integers (or consecutive values of some enumerated type ), and the address of an element is computed by a "linear" formula on the indices.