Finding Row/Col/Nul space

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The left nullspace: *they don't know I exist*

FootLettuce
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V'=Ꮭ(V ,  𝔽)

T∈Ꮭ(V, W)
T'∈Ꮭ(W', V')
T'∘φ = φ∘T

Obviously, dim(rangeT)=dim(rangeT')
⇔ column rank = row rank

spiderjerusalem
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I rewrote Rosetta code for RREF and it gave me identity matrix I checked also in Maple and also identity matrix I calculated determinant and it has nonzero value so rows/colums are linearily independent

holyshit
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When you're trying to procrastinate from school.😂

eklhaft
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Ok I fully understand how to calculate a null space but dont know what it means. Can some one help me out?

gregsavitt