{"action":"opened","issue":{"url":"https://api.github.com/repos/sympy/sympy/issues/11212","repository_url":"https://api.github.com/repos/sympy/sympy","labels_url":"https://api.github.com/repos/sympy/sympy/issues/11212/labels{/name}","comments_url":"https://api.github.com/repos/sympy/sympy/issues/11212/comments","events_url":"https://api.github.com/repos/sympy/sympy/issues/11212/events","html_url":"https://github.com/sympy/sympy/issues/11212","id":159159489,"number":11212,"title":"IndexedBase: wrap more than a Symbol as base","user":{"login":"Upabjojr","id":4128856,"avatar_url":"https://avatars.githubusercontent.com/u/4128856?v=3","gravatar_id":"","url":"https://api.github.com/users/Upabjojr","html_url":"https://github.com/Upabjojr","followers_url":"https://api.github.com/users/Upabjojr/followers","following_url":"https://api.github.com/users/Upabjojr/following{/other_user}","gists_url":"https://api.github.com/users/Upabjojr/gists{/gist_id}","starred_url":"https://api.github.com/users/Upabjojr/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Upabjojr/subscriptions","organizations_url":"https://api.github.com/users/Upabjojr/orgs","repos_url":"https://api.github.com/users/Upabjojr/repos","events_url":"https://api.github.com/users/Upabjojr/events{/privacy}","received_events_url":"https://api.github.com/users/Upabjojr/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2016-06-08T13:09:31Z","updated_at":"2016-06-08T13:09:31Z","closed_at":null,"body":"Currently, `IndexedBase` wraps a symbol to use as the _base_ symbol.\r\n\r\nWhat about generalizing? For example, wrapping a function:\r\n\r\n```python\r\n>>> af = Function(\"A\")(x)\r\n>>> A = IndexedBase(af)\r\n>>> A[i]\r\nA(x)[i]\r\n```\r\n\r\nAs another example, random symbols could be wrapped to allow for a naive representation of stochastic processes."}}
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