![]() ![]() We all need open access science, but it seems that, step by step, we are more and more elitists and the best "marketing" is winning. These last journals are possibly the best choice, but they are disregarded because they are usually regional or very specific, even if some have a very long story (we have many examples in different countries, normally associated with universities or research centers). ![]() We have three options to publish: 1) Free of charge publication, but not open access (and you have to pay for the paper/book edited if you want to download the result of the other's science) 2) Open access and but you have to pay (1500-3000 euros, aprox, per publication) 3) Open access and free of charge. If your N and K are your arrays you might have run into a situation where N < K, because this also happens when N < K. You cannot compute a non-empty null space of a full rank matrix. Vzeros (1,length (N)-length (K)) Then you only check the length of the 1-by-1 arrays N and K - and the difference of that is zero. ( NOT the same as LU factorization - See "lu" if you are interested in that.During my whole scientific life I have been skeptical about the mechanism of publishing. That null returns an empty vector merely means your matrix is full rank.diag - Extracts the diagonal of a matrix into a vector, or creates a matrix having the vector as its diagonal.any - genrates 1 if any element is non-zero, 0 otherwise. X B is called homogeneous when the vector B is the null vector, i.e. abs(x) 1,4,2 gives the absolute values of each element, you only need this step if you have complex numbers in your vector.2 is the elementwise power.all - generates 1 if all elements are non-zero, 0 otherwise. I would like to transfer the ureal (n) value to the uQ1 (n) array.Individual elements can only be deleted if the matrix is unwound first: data( 5 ) =.Rows or columns of a matrix can be deleted by replacing them with the null vector:."data( 4 ) = 7" continuing from the above example. Mtr randn (M,N) V rand (1,K) Vzeros (1,length (N)-length (K)) Then you only check the length of the 1-by-1 arrays N and K - and the difference of that is zero. Z null( A ) returns a list of vectors that form the basis for the null space of a matrix A. 33.1k 11 11 gold badges 89 89 silver badges 99 99 bronze badges. distribution with k 1 degrees of freedom under the null hypothesis. Your file nullbase.m should not use the MATLAB functions rank or null. ![]()
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