Title

第4講 2.4 accumulation points

Video

L4A

Syllabus

章節大綱

L4_A
   
  2.3 Closed set (end.)
      2.4 Accumalation points
            (1)definition

      
L4_B
      2.4 Accumalation  points(cont.)
            (1)Thm for accumulation points
            (2)in finite set (in a metric space)  
 
L4_C
      2.4 Accumalation points(cont.)
            (1)in infinite set
            (2)in R (of one,two dimension)     
 
L4_D
      2.4 Accumalation points(end.)
           (1)for 交集,聯集,包含
           (2)A is closed if and only if A'⊂A.