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Interval package

8 bytes removed, 03:56, 9 November 2014
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→‎Matrix operations: Simplified construction of interval matrix
''Technical background information: The interval package simulates a [http://books.google.de/books?hl=de&id=I7X9EVfeV5EC&q=accumulator Kulisch accumulator] in software to produce tightly rounded results for vector and matrix operations.''
octave:1> A = infsup ([1, 2, 3; 4, 0, 0; 0, 0, 1], [1, ); A (2, 3; 4, ) = "[0, 6; 0, 0, 1])"
A = 3×3 interval matrix
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