- 木(tree; wood)
- 艮(firm; stop)
A tree's root is the hard, solid wood that lies deep underground and never moves.
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Felix Klein's Erlangen program (1872) on geometry and group theory
The Erlangen Program is an important concept in mathematics.
Felix Klein's Erlangen program (1872) on geometry and group theory
The Erlangen Program is an important concept in mathematics.
A tree's root is the hard, solid wood that lies deep underground and never moves.
The neck (collar) is the part of the head that receives commands from above and connects the head to the body.
A tree's root is the hard, solid wood that lies deep underground and never moves.
The neck (collar) is the part of the head that receives commands from above and connects the head to the body.
Felix Klein's Erlangen program (1872) on geometry and group theory
Felix Klein's Erlangen program (1872) on geometry and group theory
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