A.3. TRANSCENDENTAL NUMBERS 367
is symmetric in the β 1, · · · ,β m. Thanks to the factor vpv(m+1)p and the factor p! comingfrom j ≥ p, it is a symmetric polynomial in the vβ i with integer coefficients, each multi-plied by p with the β i roots of Q(x) = vxm + · · ·+u. By Theorem A.2.7 this is an integer.As noted earlier, it equals 0 unless j ≥ p when it contains a factor of p. Thus the sum ofthese integers is also an integer times p. It follows that
m
∑i=1
n
∑j=0
f ( j) (β i) = m2 (p) p, m2 (p) an integer.
Note that no use was made of p being a large prime number. This will come next.
Lemma A.3.4 If K and c are nonzero integers, and β 1, · · · ,β m are the roots of a singlepolynomial with integer coefficients,
Q(x) = vxm + · · ·+u
where v,u ̸= 0, then,K + c
(eβ 1 + · · ·+ eβ m
)̸= 0.
Letting
f (x)≡ v(m+1)pQp (x)xp−1
(p−1)!
and I (s) be defined in terms of f (x) as above,
I (s)≡∫ s
0es−x f (x)dx = es
deg( f )
∑j=0
f ( j) (0)−deg( f )
∑j=0
f ( j) (s) ,
it follows,
limp→∞
m
∑i=1
I (β i) = 0 (1.10)
and for n the degree of f (x) ,n = pm+ p− 1, where mi (p) is some integer for p a largeprime number.
Proof: The first step is to verify 1.10 for f (x) as given in 1.6 for p large prime numbers.Let p be a large prime number. Then 1.10 follows right away from the definition of I
(β j
)and the definition of f (x) .
∣∣∣I(β j
)∣∣∣≤ ∫ 1
0
∣∣∣β j f(
tβ j
)eβ j−tβ j
∣∣∣dt ≤∫ 1
0
∣∣∣∣∣∣∣|v|(m−1)p
∣∣∣Q(tβ j
)∣∣∣p t p−1∣∣∣β j
∣∣∣p−1
(p−1)!dt
∣∣∣∣∣∣∣which clearly converges to 0 using considerations involving convergent series which showthe integrand converges uniformly to 0. The degree of f (x) is n≡ pm+ p−1 where p willbe a sufficiently large prime number from now on.
From 1.4,
cm
∑i=1
I (β i) = cm
∑i=1
(eβ i
n
∑j=0
f ( j) (0)−n
∑j=0
f ( j) (β i)
)