◞ U+25DE Unicode文字
Unicode
U+25DE
◞
数値文字参照
◞ ◞
URLエンコード(UTF-8)
%E2%97%9E
ユニコード名
LOWER RIGHT QUADRANT CIRCULAR ARC
一般カテゴリ－
Symbol, Other（記号，その他）
Base64エンコード : 4pee
「◞」に似ている意味の文字
◞の説明
In mathematics, a curve (also called a curved line in older texts) is an object similar to a line, but that does not have to be straight.
Intuitively, a curve may be thought of as the trace left by a moving point. This is the definition that appeared more than 2000 years ago in Euclid's Elements: "The [curved] line is […] the first species of quantity, which has only one dimension, namely length, without any width nor depth, and is nothing else than the flow or run of the point which […] will leave from its imaginary moving some vestige in length, exempt of any width."This definition of a curve has been formalized in modern mathematics as: A curve is the image of an interval to a topological space by a continuous function. In some contexts, the function that defines the curve is called a parametrization, and the curve is a parametric curve. In this article, these curves are sometimes called topological curves to distinguish them from more constrained curves such as differentiable curves. This definition encompasses most curves that are studied in mathematics; notable exceptions are level curves (which are unions of curves and isolated points), and algebraic curves (see below). Level curves and algebraic curves are sometimes called implicit curves, since they are generally defined by implicit equations.
Nevertheless, the class of topological curves is very broad, and contains some curves that do not look as one may expect for a curve, or even cannot be drawn. This is the case of space-filling curves and fractal curves. For ensuring more regularity, the function that defines a curve is often supposed to be differentiable, and the curve is then said to be a differentiable curve.
A plane algebraic curve is the zero set of a polynomial in two indeterminates. More generally, an algebraic curve is the zero set of a finite set of polynomials, which satisfies the further condition of being an algebraic variety of dimension one. If the coefficients of the polynomials belong to a field k, the curve is said to be defined over k. In the common case of a real algebraic curve, where k is the field of real numbers, an algebraic curve is a finite union of topological curves. When complex zeros are considered, one has a complex algebraic curve, which, from the topological point of view, is not a curve, but a surface, and is often called a Riemann surface. Although not being curves in the common sense, algebraic curves defined over other fields have been widely studied. In particular, algebraic curves over a finite field are widely used in modern cryptography.[出典:Wikipedia]
◞の文字を使った例文
◞ あの日、私たちは大きな決断を下す必要に迫られていた。私たちには選択肢が二つしかなく、それぞれには高いリスクが伴う。だからこそ、私たちは腹を括り、その決断を下した。◞ ◞ しかし、私たちが選んだ道は周囲の人々からは理解されず、非難を浴びることになった。私たちの決断を批判する人々が多かった中で、私たちは自身の価値観を貫き、自信を持って進むことができた。◞ ◞ その決断が正しかったのかどうか、後になるまで分からなかった。しかし、それでも私たちは自分たちの選択を後悔することはなかった。私たちは自分自身の信念に従い、思い切って行動したことが、自分自身を誇りに思わせてくれたのだ。◞ ◞ そして、決断を下してから数年が経ち、私たちは今でもそれを振り返ってはにやりと笑うことがある。決断を下すまでには長い葛藤があったけれど、その決断が今の私たちを作り上げたのだ。◞ ◞ 人生は常に選択の連続であり、その一つ一つが私たちを大きく変えていく。その中でも時には、大きな決断に迫られることがある。その時こそ自分自身の信念を持ち、自分の直感に従って、大胆に選択することが大切だ。◞ ◞ 私たちは自分自身が正しいと信じる道を進むことでしか、本当の自分を発見することができない。他人からは理解されずとも、自分の信念を貫くことが最終的には自分自身を幸せにすることに繋がる。◞(この例文はAIにより作成されています。特定の文字を含む文章を出力していますが内容が正確でない場合があります。)