from MSC2000 value of: <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="$ n$"><mml:mi>n</mml:mi></mml:math>-vertex theorems via direct methods
from MSC2000 value of: <n0:math xmlns:n0="http://www.w3.org/1998/Math/MathML" alttext="$ n$"><n0:mi>n</n0:mi></n0:math>-vertex theorems via direct methods
