So, remember, when we set up the divergence theorem, we need the normal vectors to point out of our region, which means that on the top surface, n But, on the bottom face, we want n pointing down.

当我们建立散度定理时，我们要使法向量指向区域外，即在上表面时，要指向上方。，we，want，n，pointing，up。,但是，在下表面，要使n指向下面。

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A bullish divergence occurs when prices trace a bottom, rally, and then sink to a new low.

看涨背离发生在价格达到底部，反弹，然后创造新低。

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But that bottom-line number conceals a widening divergence between the family patterns of the college-educated top one-third, where family life is increasingly stable, and those of the non-college-educated bottom two-thirds, where family life is increasingly disrupted.

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Its MACD or Moving Average Convergence Divergence was at a negative 28.749 on Friday (bottom portion of the chart) and has increased to a negative 26.6 on Monday morning.

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Of course, in very strong bull or bear markets, we must rely on technical indicators that can stay with strongly trending markets, as momentum indicators like the Moving Average Convergence Divergence (MACD) indicator or Relative Strength Index (RSI) will top or bottom out well ahead of prices.

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