A Family of Even-Point Ternary Approximating Schemes

Table 2

Comparison of 4-point ternary schemes.

Scheme	Type	Support	Order	𝐶^𝑛
Ternary 4-point [3]	Interpolating	5	3	2
Ternary 4-point [4]	Interpolating	5	3	2
Ternary 4-point [4]	Interpolating	5	4	1
Ternary 4-point [5, 9]	Interpolating	5	3	1
Ternary 4-point [7]	Approximating	5.5	4	2
Ternary 4-point [14]	Approximating	5	4	3
Ternary 4-point [15]	Approximating	5.5	4	2
Ternary 4-point proposed	Approximating	5.5	5	4