ideal
/aɪˈdi(ə)l/ 名词 C1中文： 典范、理想
- A perfect standard of beauty, intellect etc., or a standard of excellence to aim at.
- A two-sided ideal; a subset of a ring which is closed under both left and right multiplication by elements of the ring.
- A non-empty lower set (of a partially ordered set) which is closed under binary suprema (a.k.a. joins).
- A collection of sets, considered small or negligible, such that every subset of each member and the union of any two members are also members of the collection.
- A Lie subalgebra (subspace that is closed under the Lie bracket) 𝖍 of a given Lie algebra 𝖌 such that the Lie bracket [𝖌,𝖍] is a subset of 𝖍.
- A subsemigroup with the property that if any semigroup element outside of it is added to any one of its members, the result must lie outside of it.
复数 ideals
来自图书馆
“Tell the gentleman that I need not repeat to him a description of my ideals.
I left the conservatory, and, at the same time, the rose and my ideal.
“Juxtaposition—or you may call it propinquity—or, if you like, being rather too near for one maintaining the position of an ideal.”
Tell her that, if she had mingled a little trust with her conception of the ideal, much heartache might have been avoided.
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