Axel Kemper
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 Apr 9 revised Boolean algebra - Maxterms added recipe Apr 9 answered Boolean algebra - Maxterms Apr 7 comment Making a “larger than” function with only basic arithmetic For integers, such a function is called Digital Comparator. It is composed of bitwise operations which in turn can be computed via arithmetic. Real numbers are more complicated to compare. This depends on the number representation. Apr 6 awarded Unsung Hero Mar 27 answered For invertible $A$, $C$, prove that: $(A^{−1} + B^TC^{−1}B)^{−1}B^TC^{−1} = AB^T(BAB^T + C)^{−1}$ Feb 15 answered Is there a proof for the FOIL method in Boolean algebra? Feb 13 revised Need help on clarification on a boolean algebra/logic gate question. added 85 characters in body Feb 13 comment Need help on clarification on a boolean algebra/logic gate question. Your AND-OR solution does not use the binary decoder component described in the question. Make use of the fact that all minterms have least-significant-bit false. Thus 3-input decoders are sufficient to distinguish the minterms. OR the three cases and AND them to 0 for A=1. Feb 12 comment Graph Software, figures For function plotting, fooplot is quite useful. Feb 4 answered Simplifying DNF conversion? Jan 24 answered How can I prove the following logic equation? Jan 24 comment self dual boolean function Meanwhile, a similar question has been answered here. Jan 24 answered Sum-of-products for a function Jan 23 answered K-Map multiple representations Jan 23 revised K-Map multiple representations included pictures Jan 17 awarded Yearling Jan 13 comment Given triangle ABC, how to move point B to a certain angle given that its new location lies within the direction of its old altitude. You could make use of the inscribed angle theorem. $B'$ must be on a circle around a center point $M$ through $A$ and $C$. Center angle $AMC$ is $2\theta$. The nearest point on the circle is the intersection of the circle and line $BM$. Jan 7 answered How to transform formulas in conjunctive normal forms? Jan 6 answered Number of self dual functions and number of inputs for which self dual function is 1 Dec 22 comment Affinity of a boolean function in adequate sets Yes. That is correct.