The phrase "a single arena" is correct and usable in written English.
It can be used to refer to one specific area or field of activity, often in a metaphorical sense.
Example: "In the world of competitive sports, athletes often train in a single arena to hone their skills."
Alternatives: "one domain" or "a solitary field".
The much-anticipated final deal would be the first to include all the world's nations into a single arena for climate action.
Fewer still can create characters that endure and develop from book to book, and avoid the ghetto of a single arena of national or regional intrigue.
Asked to name a single arena of foreign policy in which his Conservative-led government disagreed with or had a new idea to offer the Obama Administration, Hague said he could currently think of none.
It might be the most intense concentration of elite competition in a single arena in modern history — or "any building in the history of the world," quipped Michael Roth, the Staples Center spokesman.
Users are not necessarily looking for the best product in a single arena, but rather a connected experience across electronics.
First, clonal turnover--an analogy of the mutation-drift equilibrium model in a finite population [ 26]--is only applicable to systems (we shall refer to them as 'asexual complexes' hereafter) where each new clone may enter a single arena for mutation, random drift, and selection with other clones (following Birky and Barraclough [ 16]).
No, you don't have to be a superstar in every single arena in business (math is not and will never be my strong suit), but you're going to have to be willing to at least learn the basics for the sake of your success.
The shift has been driven by a clamor among investors for less expensive trading systems, a challenge from Internet-based and electronic trading systems, and a perception that Europe has become a single investment arena since the introduction of a unified currency -- the euro.
Women have entered every single profession, every single arena, provoking changes that have left some men "bewildered", Kimmel says.
The tracker shown in Figure 1j,k,l,m,n,o,p,q,r,s takes single arena videos and corresponding smoothened backgrounds as input (cf. first column of the tracker figure, Figure 1j,u,t).
Encoding of information is not a single-choice arena, and includes ones that I didn't mention, from magnetic strips on cards to touch recognition technologies.
