chicken dih
\small
\begin{aligned}
\mathfrak{X}
&=
\left(
\sum_{n_1=0}^{\infty}
\sum_{n_2=0}^{\infty}
\sum_{n_3=0}^{\infty}
\cdots
\sum_{n_{20}=0}^{\infty}
\frac{
(-1)^{
\sum_{k=1}^{20} n_k
}
\prod_{k=1}^{20}
\left(
\zeta(2n_k+1)
+
\Gamma\!\left(
n_k+\frac12
\right)
\right)
}{
\prod_{k=1}^{20}
(n_k+1)!
}
\right)
\\[1.5em]
&\qquad \times
\left(
\int_{-\infty}^{\infty}
\int_{-\infty}^{\infty}
\int_{-\infty}^{\infty}
\cdots
\int_{-\infty}^{\infty}
\exp\!\left(
-\sum_{i=1}^{15}
\sum_{j=1}^{15}
a_{ij}x_ix_j
+
i\sum_{m=1}^{15}
\omega_m\phi_m(x_m)
\right)
\prod_{r=1}^{15}
dx_r
\right)
\\[1.5em]
&\qquad \times
\left(
\prod_{\alpha=1}^{50}
\left[
\left(
\sum_{\beta=1}^{50}
\frac{
\partial^{\alpha+\beta}
}{
\partial x^\alpha
\partial y^\beta
}
\right)
\circ
\left(
\nabla^2
+
\Delta
-
\Box
+
\mathcal{L}_{X_\alpha}
\right)
\right]
\right)
\\[1.5em]
&\qquad \times
\left(
\bigoplus_{\lambda\in\widehat{G}}
\operatorname*{colim}_{\substack{
U\trianglelefteq G\\
[G:U]<\infty
}}
H^{n}_{\mathrm{\acute{e}t}}
\!\left(
X_{\overline{\mathbb{Q}}},
\mathbb{Q}_{\ell}(m)
\right)_{\lambda}
\right)
\\[1.5em]
&\qquad \times
\left(
\coprod_{a_1\in A_1}
\coprod_{a_2\in A_2}
\coprod_{a_3\in A_3}
\cdots
\coprod_{a_{30}\in A_{30}}
\mathscr{F}_{a_1,a_2,\dots,a_{30}}
\right)
\\[1.5em]
&\qquad \times
\left(
\underbrace{
\left(
\frac{
\sqrt{
\left|
\frac{
\partial(
x_1,\dots,x_n
)
}{
\partial(
u_1,\dots,u_n
)
}
\right|
}
}{
\displaystyle
\sum_{k=1}^{n}
\left(
\sin^2(x_k)
+
\cos^2(x_k)
\right)
}
\right)
+
\left(
\oint_{\partial\Omega}
\mathbf{F}\cdot d\mathbf{s}
\right)
+
\left(
\iiint_{\mathcal{M}}
\nabla\cdot\mathbf{F}\,dV
\right)
}_{\text{repeated geometric--analytic structure}}
\right.
\\[1em]
&\qquad\qquad\qquad
\left.
+
\underbrace{
\left(
\sum_{p\text{ prime}}
\frac1{p^s}
\right)
\left(
\prod_{q\text{ prime}}
\frac1{1-q^{-s}}
\right)
+
\left(
\int_0^1
x^{a-1}(1-x)^{b-1}\,dx
\right)
}_{\text{number theoretic structure}}
\right.
\\[1em]
&\qquad\qquad\qquad
\left.
+
\underbrace{
\left(
\lim_{n\to\infty}
\left(
1+\frac1n
\right)^n
\right)
+
\left(
\sum_{k=0}^{\infty}
\frac{(-1)^k x^{2k+1}}{(2k+1)!}
\right)
}_{\text{classical limits and series}}
\right)^{\otimes\aleph_0}
\\[1.5em]
&\qquad \times
\left[
\begin{matrix}
a_{11} & a_{12} & a_{13} & \cdots & a_{1,20} \\
a_{21} & a_{22} & a_{23} & \cdots & a_{2,20} \\
a_{31} & a_{32} & a_{33} & \cdots & a_{3,20} \\
\vdots & \vdots & \vdots & \ddots & \vdots \\
a_{20,1} & a_{20,2} & a_{20,3} & \cdots & a_{20,20}
\end{matrix}
\right]
\\[1.5em]
&\qquad \times
\left(
\forall\varepsilon>0\;
\exists\delta>0\;
\forall x,y\in\mathbb{R}^n
\;
\Big(
\|x-y\|<\delta
\Rightarrow
|f(x)-f(y)|<\varepsilon
\Big)
\right)
\\[1.5em]
&\qquad \times
\left(
\bigcap_{n=1}^{\infty}
\bigcup_{m=n}^{\infty}
E_m
\right)
\cap
\left(
\bigcup_{n=1}^{\infty}
\bigcap_{m=n}^{\infty}
F_m
\right)
\\[1.5em]
&\qquad \times
\left(
\left(
\left(
\left(
\left(
\frac{
1
}{
1+\frac{
1
}{
1+\frac{
1
}{
1+\frac{
1
}{
1+\cdots
}
}
}
}
\right)
\right)
\right)
\right)
\right)
\\[1.5em]
&\qquad \times
\left(
\sum_{\substack{
i_1,\dots,i_{10}=1
}}
^{N}
T_{i_1i_2\dots i_{10}}
x^{i_1}
x^{i_2}
\cdots
x^{i_{10}}
\right)
\\[1.5em]
&\qquad \times
\left(
\mathbb{E}\!\left[
\exp\!\left(
i\int_0^T
B_t\,dW_t
-
\frac12
\int_0^T
|B_t|^2\,dt
\right)
\right]
\right)
\\[1.5em]
&\qquad \times
\left(
\operatorname{Tor}^{R}_{n}
(M,N)
\oplus
\operatorname{Ext}_{R}^{n}
(M,N)
\oplus
\pi_n(X)
\oplus
K_n(\mathcal{A})
\right).
\end{aligned}
