id	keyword
ejpam-5960	∈ 𝐿𝑋
ejpam-5960	∈ 𝐷
ejpam-5960	∈ 𝑀
ejpam-5960	∈ 𝐼
ejpam-5960	∈ 𝑅𝑥𝛼
ejpam-5960	∈ 𝑋
ejpam-5960	𝑋. 𝐿𝑋
ejpam-5960	𝐿 −
ejpam-5960	−1 𝐿