The theory of harmonic vectors (THV) rests on the hypothesis that tonal functions result from root progressions, not the reverse: it is a transformational theory of the tonal harmonic process. The article discusses three interconnected constraints: the asymmetry of progressions, their limitation to the diatonic span, and the affirmation of the tonic.

中文翻译：

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谐波向量和调性的约束

和声矢量 (THV) 理论基于这样的假设：音调函数是由根级数产生的，而不是相反：它是音调和声过程的转换理论。这篇文章讨论了三个相互关联的限制：进行的不对称性、它们对全音域的限制以及对主音的肯定。