With 24 games played, Arsenal now stands on 57 points - and thus continues to put pressure on Manchester City and Manchester United, who are chasing close behind.
The 1-0 goal that gave the Gunners their 18th win of the season came almost immediately after the break.
Leandro Trossard, who had a goal ruled out by VAR in the first half, played Gabriel Martinelli through for the winning goal.
The Brazilian placed a right-footed shot next to the far post, but the cheers failed because in the same situation he received an opponent's boot on his knee, resulting in severe pain.
After a few minutes, Martinelli was able to get up and finish the match which Arsenal fairly won.
Also notable from the match is that Arsenal's Ukrainian Oleksandr Zintjenko had to wear the captain's armband, in Ukraine's yellow and blue colors, instead of Martin Ödegaard.
This as a mark because Friday was the anniversary of Russia's invasion of Ukraine.
Leicester are very much involved in the bottom battle, but in any case stay above the line for the time being.
Everton, on the other hand, do not, who after the heavy 0-2 loss at home against Aston Villa find themselves in the relegation zone.
Both Leeds and West Ham passed Everton in the fight to play football in the top league next season as well.
Leeds beat Southampton 1-0 at home, after a goal by Junior Firpo with barely a quarter of an hour remaining.
The West Ham-Nottingham meeting was goalless until the 70th minute, when the home team began a quarter-long goal orgy.
Danny Ings scored twice - his first for the club - and Declan Rice and Michail Antonio were on target in what ended up being a 4-0 victory for the Hammers.