! " # $ % & ' $ % ! & & ( & ! ) % $ ! * + + ! ! , " ! + %- . / + 012+ω = ω% = ω% = ω% = ω% 2 +* ! + ω + = = + ! = + ! +* ! +* ! 3 % + ω = +ω ϕ +ω - + ω + + ω = +ω ϕ +ω % 4 & # ) " ω ) % +ω = 5 5 ϕ 5 ω5 = ! ! + +ω +ω 6 ω 5 7 ω5 − % % ! %+ % ) $ ! +ω% + ϕ 4 + =5 = 1 + ω = + ω = = ω + + ω = ω ω5 + ω ω + ω << ω 5 ! ω ω5 5 ! ϕ +ω = 5 ) = 5% - :! − ∞% ; −∞ ϕ +ω = 5 % - ! ω ω5 5 ω ω5 9 ϕ +ω = − ω ω5 + ) ω5 = %- +ω = !! # ! +ω = + 4 + :! ; % −∞ + ω >> ω 5 ω +∞ ω 5 +ω < ω 1 ω ω + ω − ! +∞ ! +∞ ) +ω − +− 5 :! ! ϕ +ω = − +∞ π & %- ω5 ω ω5 ω =5 =5 =− 5 :! + ) ; +ω = − 5 ω5 ω +∞% +∞ 8 5 +ω 5 = ) ω5 ω +ω 5 = −8 ) ϕ +ω 5 − ϕ +ω 5 = − =− + ω = + ω ω5 +ω = + π +ω% + ϕ = ∞% 1 π ω ω5 = + = + ω 9 ϕ +ω = π − ω ω5 ω = ω ω + ω5 ω ω5 4 ω5 = ω5 ω + ω << ω 5 # +ω < 5 ω ω ω5 ! 5 ω ) +ω − 5 :! ! ϕ +ω = ω5 =5 ω & ) ω5 ω +ω = 5 π − ∞% 5 + ω >> ω 5 ω 6 ω5 < % ω 6 ω5 +∞ ! ϕ +ω = 5 +ω < ω +ω = 9 ! ω → +∞ +∞ ! ω → +∞ ) +ω = 5 +∞ 5 ϕ +ω & π6 !>! ϕ +ω ω5 ω 4 π 5 !! ) :! !! ) # % 0 ! # ω5 ω :! % +' 4 ! & !! :! ) ! :! ? + % = ! " ! 2 1 ∃+ ∃+ ∈ ∈ A + ω= ∀ ∈ + = π % & ∞ +ω% % + =5 ? ?! ∞ 2 +ω% % =5 5 = + = +3 +ω% % 3 +3 +ω% % 3 3 5 = 3 5 B ! + = ∞ +ω% % + ϕ + 5 =5 * ! 5 4 ! : * ! ! $ ! & 1 2 + ϕ5 % ! ∞ +ω% % + ϕ = D 4 ! = 2 ! C !# C & F+! $ ! ! ! ! = 5 ! +ω% + ϕ + + = = ∞ ! ! E 4 ! !! !? +ω% % + ϕ =5 ! ! ! + ) * ( ?! " & + % @ + = + = + + + → + + → + + + + = + + * ?! !! ! ⇔ + = + + + " !! $ ! !# $ + + = 2 " + = + + + 4 ! +4 # % ∞ 6 +ω% % + ϕ =5 = 4 +ω% % + + = + = ∞ +ω% % + ϕ % " + ω + ! +ω% % + + + =5 & ( ) % = ω +ω ≥ .# . .# .# # # = {ω ! $ ) +ω ≥ ( + ω = + = − 8 )} ! [59 ω ] % ! [ω 9+∞[ % ! [ω 9 ω ] ! [59 ω ] ∪ [ω 9+∞[ # # ≤ 9 $ ! ! $ ) & + ω + ω 7 : ! % .# ∞ +ω% % + ϕ + = 9 =5 + ω = ∞ +ω% % + ϕ 3 3 =5 3 ω << ω ω >> ω & 3 << ! # + # ! + G 2 . 2 4 + ω = ω 6 ω5 ω = ω + ω 6 ω5 + 4 ω 6 + ω 6 + ω = % - % = 4 ω5 = ω 6 ω5 + ω 6 ω5 ! * % 4 ω5 = % & ' . + = + ∞ +ω% % + ϕ = ↑ ↓ = + =5+ ∞ +ω% % + ϕ = + − = H 8 ! ! 4 1 ω << ω 5 + ω = = + = ω 6 ω5 ω < + ω 6 ω5 ω5 ω + = ω5 ∞ +ω% % + ϕ + ω5 012+ω π +ω = =5 ω <<ω5 ! + ω << ω 5 + + ω5 1 2 +ω% % + ϕ + + = +ω% % + ϕ ω5 2 ! + + ≈ ω5 .# 2 4 + ω = + ω = ω + + ω + ω = = 4 ω5 = + ω 6 ω5 4 ω5 = + ω 6 ω5 + ω % + - = ω ω5 .# ! $ # = % % % + ω = ⇔ ω = ω5 [59 ω 5 ] I ! = + = 5 + +ω% % + ϕ = ↓≈ ↓ + = + 5 5 +5 = + 8 ω 5 << ω .# ∞ π ω ! ! . ω >> ω 5 ω + ω < < 5 ω 6 ω5 ω ω5 012+ω = ω % + = ω5 + = + = ∞ +ω% % + ϕ + = 4 ω >> ω 5 2 + = ∞ = π ω 5 +3 3 5 ! : =5 ω5 +ω% % 3+ϕ 5 3 = ω5 +3 3 5 $ ! 2 + ω = + ω + = ω + ω − ω 5 !! ) >> # 3 >> ω << ⇔ ω << .". + ω < =ω ω ω < ω ) +ω < 5 ω % ω ) +ω :! & ) >> 4 ω = !>! ) ω = 5 ω ω >> ω5 = +ω >> ω ⇔ ω << ω 5 = :! + ω < & ) ω =− 5 < ω 6ω ω ω ! ωω = 5 ω5 = ω 6ω = 1 1 = ω5 × × 5 ω + = 5 = ω ω5 = ω < ω5 < ω < ω < ω5 < ω > >> ω ω <ω ω << ω5 ' # ! $! ! ? ω5 ω ω ω >ω ω = ω5 ω >> ω5 +ω 5 = % - # + ? < ω ω5 ! ) ≈ Kω 9 ω J ω ) ω ≈5