Grammar Rules

$S$ or $R$ is used as the root node in the following discussion, so $O(S)=O(R)=1$.

Binary Rules (w) Unary Rules (w) Lexicons (w) Possible Chain Rules
D->BC (2)
E->BC (3)
F->BC (4)
S->AD (2)
S->AE (3)
S->AF (3)
S->AG (2)
F->E (2)
E->D (3)
G->E (3)
A->w0 (2)
B->w1 (2)
C->w2 (1)
null
F->E
G->E
E->D
F->E->D
G->E->D
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_ in Markdown conflicts with that in Latex, here is the solution to it:

Hexo uses Nunjucks to render posts (Swig was used in older version, which share a similar syntax). Content wrapped with {{ }} or {% %} will get parsed and may cause problems. You can wrap sensitive content with the raw tag plugin.

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{% raw %}
$$
e^{i \theta_{t}} = \cos \theta_{t} + i \sin \theta_{t}
$$
{% endraw %}

Results

$$ e^{i \theta_{t}} = \cos \theta_{t} + i \sin \theta_{t} $$

Ref: https://hexo.io/docs/troubleshooting.html#Escape-Contents

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