x, y characters; x, y variables, cos operator, not cos variable,
ϵ, ε,
Xα⊤,
x, . . . , z; x +· · · + z,
xlim→c,
k j=1Π
,
∥x∥,
1+x 4 , C, A, G,
R, C,
≡/.
x + y + z = 1,
x + y + z = 1,
1
x + y + z = 1,
x + y + z = 1.
x + y + z = 1, (4)
2x1− 3y1 = 4, (5)
5x2− 6y2 = 7. (6)
a first b second 1. first 2. second Apple fruit
Bear animal John boy
Mary girl 1 2 3 4 [ 1 2
3 4 ]
{ 2x1− 3y1 = 4 5x2− 6y2 = 7
\left( \right)
2
title 1 2 3 4 5 6
α1E1 0 · · · 0 −β1A1
−β2A2 α2E2 0
... . .. . .. ...
... . .. . .. 0
0 · · · −βKAK αKAK
x1 x2 ... ... xK
≡ C
( α1,· · · , αK
β1,· · · , βK
)
x1
... ... xK
= 0.
(7)
Xj−1 = AHj XjAj − AHj XjBj(Rj + BjHXjBj)−1BjHXjAj + Hj
= AHj Xj(I + GjXj)−1Aj + Hj, (8)
πj(k) =
{ k− j + 1 + p, for k = 1, . . . , j − 1, k− j + 1, for k = j, . . . , p.
Mj =
[ Aj 0
−Hj I ]
, Lj =
[ I Gj 0 AHj
]
. (9)
3
