> Dodgson, but his contributions are not considered noteworthy enough to make any kind of timeline. By whom? Obviously the poster did. Lots of people think o

> Dodgson, but his contributions are not considered noteworthy enough to make any kind of timeline. By whom? Obviously the poster did. Lots of people think of him in connection with his work in logic, which isn't research-level, but I think of him in the context of, e.g., https://en.wikipedia.org/wiki/Dodgson_condensation https://en.wikipedia.org/wiki/Dodgson_condensation , which to my somewhat amateurish knowledge of the subject was a research-level contribution for its time.