Automorphisms of Ordinary Differential Equations

Figure 5

(a) Vector field 𝑍:𝑍_𝐏(𝜆)=(𝑑/𝑑𝜆)𝐦(𝜆)𝐏

(b) Variations 𝑍(𝑡):𝑍(𝑡)_𝐏(𝑡)=(𝑑/𝑑𝑡)𝐦(𝑡)𝐏