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| rev | Bot | (Created page with "<div class="d-none"><math> \newcommand{\mathds}{\mathbb}</math></div>Clarify the theory of bases and dimensions for the linear subspaces <math>V\subset\mathbb R^N</math>, notably by establishing the formula <math display="block"> \dim(\ker f)+\dim(Im f)=N </math> valid for any linear map <math>f:\mathbb C^N\to\mathbb C^N</math>, and then extend this into a theory of abstract linear spaces <math>V</math>, which are not necessarily subspaces of <math>\mathbb C^N</math>.") | Apr 20'25 at 1:30 | +473 |