The phrase "a single topic for" is correct and usable in written English.
It can be used when referring to a specific subject or theme that is the focus of discussion or analysis.
Example: "The conference will focus on a single topic for the entire duration, which is climate change."
Alternatives: "one subject for" or "a sole theme for".
Last year he started his nonprofit quarterly as a selection of historical writings with a single topic for each issue.
Boyd's picaresque, like its hero, never focusses on a single topic for too long, and doesn't have much depth, but it is thoroughly entertaining.
(Dewey insisted on a single topic for the entire hour: "Shall the Communist Party in the United States be outlawed?") The first such debate to be televised, in 1956, was also an intra-party affair, between the Democratic rivals Adlai Stevenson and Estes Kefauver.
Research requires you to focus on a single topic for years, and I just don't have that long of an attention span.
We all chase the same stories, get spun like a top by the PR machine, and can't sustain a conversation about a single topic for more than a few days before we all rush to the next shiny object.
Within the framework of TV delinearization, topic segmentation aims at splitting shows for which the notion of topic is relevant (e.g., broadcast news, reports, and documentaries in this work) into segments dealing with a single topic, for example, to further enrich those segments with hyperlinks.
Assuming that there is just a single topic situation for utterances of (19), we seem to predict that those utterances imply that the research assistants are among those who are asleep.
First-year undergraduates' grades in science courses were highest for students who had studied a single topic in depth for a month or more at any time during high school.
Instead of tackling a single topic in depth for 15 minutes, he spent a single minute tackling 15 topics.
And the American Association of State Colleges and Universities holds a summer retreat for presidents, this year devoted to a single topic: "embracing the opportunities for positive transformation that come with rapid change".
Composers often wrote cycles of lieder, all related by a single topic but giving scope for considerable musical development.
