Trivial manipulation of nonconvergent series validity

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I know that the harmonic series diverges $$H=\frac{1}{1}+\frac{1}{2}+...+\frac{1}{n}+...\rightarrow Diverges$$

Hence, I know that if all the terms of the harmonic series are made negative, that series also diverges $$h=-\frac{1}{1}-\frac{1}{2}-...-\frac{1}{n}+...$$

But can I write: $$h=-H$$ or is there some notation to indicate this.

I am not trying to create new maths. I am asking what is the correct notation to indicate that one series is obtained from the other by making each term negative.

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As an exercise, you could prove "if any series converges with a limit L, then the same series with all elements multiplied by the same real number c converges to c*L". You can also prove "If any series converges with a limit L, and another converges with a limit L', then the series created by adding the elements converges with a limit L + L'".

That's assuming the limit is not +/- infinity. In that case a series multiplied by 0 converges to 0, while 0 times +/- infinity is not defined. And adding two series with limits +infinity and -infinity may or may not converge, and if it converges, the limit might be anything.

Your example is the first case with c = -1.