In my bullet list, is ...是个... [something]的 problematic, and do I need an "and"?
I have read the comments and reply, then I would like to give a demo in my way. We can discuss it.


  首先给出结论 （This indicate that we will prove it in later slides...）
  
  对于给定的m（即为确定的元素数量），多项式m! #PLR(r,s,n;m)具有以下特点：  
  
  
  是三元多项式，
  是对称多项式(即#PLR(r,s,n;m)=#PLR(s,r,n;m)等)， （I'm just curious, what do you mean by 等 here? Does it mean #PLR(r,s,n;m)=#PLR(r,n,s;m) and so on?）
  是整数系数多项式，
  是3m次多项式。