,       3GL   4GL   5GL   .

, , , < (), <= ( ), > (), >= ( ), = (), <> ( ), , , .

, .

  a int(a) = 0
  a - mod(a, 2) = 0
  a - mod(a, 2) = 1
  k mod(a, 7) = 0
  a, b (a>0) (b>0)
  a, b ((a>0) (b<=0))
((a<=0) (b>0))
  a, b, c (a<0) (b<0) (c<0)
  x a < x < b  (x>a) (x<b)
  x [1, 3] (x>=1) (x<=3)
  a b ((mod(a, 2)=0) (mod(b, 2)=0) ((mod(a, 2)=1) (mod(b, 2)=1))
  (x, y) r   (a, b) (x-a)**2 + (y-b)**2 < r*r
  ax^2 + bx + c = 0 b*b - 4*a*c < 0
  (x, y)   ((x>0) (y>0))
((x<0) (y>0))
  (x, y)   (x*x + y*y > 1)
((x*x + y*y <= 1) (x<0) (y>0))
  a b a = -b
  a b a*b = 1
  a b, c, d a > (b+c+d) / 3
  a b, c, d a >= (b+c+d) ** (1/3)
  F1 F2   F1 F2
  F1 F2 F1 F2
  F1 F2 F1 F2
  F1 ,   F2 F1 F2
  F1 F2   (F1 F2) (F2 F1)

  ,       3GL   4GL   5GL   .

, , Class - - , , .




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