数列 ポータル
1学習経路
prerequisites で_order.json と
21. 全体像 と基礎
まず、
32. 作用素 と類型
シフト
43. 個別解法
54. 極限 と級数
65. 演習
Sequences Portal
1Learning Path
This portal introduces concepts in the order required within the sequence series. Prerequisites outside this series are specified in each lecture's prerequisites. The eight lecture cards follow the recommended order in _order.json; the exercise card is placed separately at the end.
21. Overview and Foundations
First establish indices, explicit formulas, recurrences, and unique determination by initial conditions. Then define arithmetic and geometric sequences through relations between adjacent terms and learn their general terms and finite sums.
data/lecture/math/sequence/sequences-and-recurrences.lecture.n.md data/lecture/math/sequence/arithmetic-and-geometric-sequences.lecture.n.md32. Operators and Classification
Use the shift operator and forward difference to express recurrences as operator equations. Then classify them by order and linearity, and organize the criteria for selecting differences, equilibria, characteristic polynomials, or state vectors.
data/lecture/math/sequence/shift-operators-and-recurrences.lecture.n.md data/lecture/math/sequence/recurrence-types-and-strategies.lecture.n.md43. Specific Solution Methods
The linked lecture titled “First-Order Recurrences” treats linear recurrences of order one: separate from in and prove homogenization by an equilibrium point. For difference equations, develop the formulation and its connection with linear operator equations.
data/lecture/math/sequence/first-order-recurrences.lecture.n.md data/lecture/math/sequence/difference-equation-basics.lecture.n.md54. Limits and Series
Define convergence of sequences by the - criterion and study divergence and tests involving geometric sequences, rational expressions, and squeezing. Apply that definition to sequences of partial sums to analyze convergence of infinite series, its necessary condition, and geometric series.
data/lecture/math/sequence/limits-of-sequences.lecture.n.md data/lecture/math/sequence/series-basics.lecture.n.md65. Exercises
These exercises consolidate classification and selection of solution methods. They may be attempted after completing the operators-and-classification stage; the lectures on limits and series are not prerequisites.
data/exercise/math/sequence/recurrence-types-and-strategies.exercise.n.md