|  | 
              
                
                  Returns: 
                
                formula<fol> -> formula<fol> | 
        
          |  | 
              
                
                  Returns: 
                
                (string * formula<fol>) list | 
        
          |  | 
              
                
                  x'
                
                :
                term
                
                  y'
                
                :
                term
                
                  s
                
                :
                string
                
                  z
                
                :
                formula<fol> 
              
                
                  Returns: 
                
                formula<fol> | 
        
          |  | 
              
                
                  arg0
                
                :
                string
                
                  arg1
                
                :
                formula<fol> 
              
                
                  Returns: 
                
                formula<fol> | 
        
          |  | 
              
                
                  arg0
                
                :
                string
                
                  arg1
                
                :
                formula<fol> 
              
                
                  Returns: 
                
                formula<fol> | 
        
          |  | 
              
                
                  Returns: 
                
                string * formula<fol> -> formula<fol> | 
        
          |  | 
              
                
                  Returns: 
                
                string * formula<fol> -> formula<fol> | 
        
          |  | 
              
                
                  fm
                
                :
                formula<fol> 
              
                
                  Returns: 
                
                formula<fol> | 
        
          |  | 
              
                
                  vars
                
                :
                string list
                
                  triang
                
                :
                term list
                
                  p
                
                :
                term
                
                  degens
                
                :
                formula<fol> list 
              
                
                  Returns: 
                
                formula<fol> list | 
        
          |  | 
              
                
                  vars
                
                :
                string list
                
                  consts
                
                :
                term list
                
                  pols
                
                :
                term list 
              
                
                  Returns: 
                
                term list | 
        
          |  | 
              
                
                  fm
                
                :
                formula<fol>
                
                  vars
                
                :
                string list
                
                  zeros
                
                :
                string list 
              
                
                  Returns: 
                
                formula<fol> list |