Wikipedia says:
Yet, IMO, real matrices are subclass of complex ones. So, even without having any mathematical degree I see that this cannot be true.
Wikipedia says:
Yet, IMO, real matrices are subclass of complex ones. So, even without having any mathematical degree I see that this cannot be true.
Answer in the comment: The Wikipedia article you linked says it: "Namely, let $V$ be any vector space with some scalar field $K$, and let $T$ be a linear transformation mapping $V$ into $V$. We say that a vector $x$ of $V$ is an eigenvector of $T$ if (and only if) there is a scalar $\lambda\in K$ such that $T(x) = \lambda x$."
($\lambda\in K$) must be in bold
Eigenvalues are roots of a polynomial. Not every real polynomial has real roots. But every complex polynomial has roots.