diff --git a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/analysis/math/map_math.py b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/analysis/math/map_math.py
index 5700e10..4a4a0a1 100644
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/analysis/math/map_math.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/analysis/math/map_math.py
@@ -32,14 +32,14 @@ from ... import base, events
 
 log = logger.get(__name__)
 
-X_COMPLEX = sp.Symbol('x', complex=True)
-
 
+####################
+# - Operation Enum
+####################
 class MapOperation(enum.StrEnum):
 	"""Valid operations for the `MapMathNode`.
 
 	Attributes:
-		UserExpr: Use a user-provided mapping expression.
 		Real: Compute the real part of the input.
 		Imag: Compute the imaginary part of the input.
 		Abs: Compute the absolute value of the input.
@@ -67,8 +67,6 @@ class MapOperation(enum.StrEnum):
 		Svd: Compute the SVD-factorized matrices of the input matrix.
 	"""
 
-	# By User Expression
-	UserExpr = enum.auto()
 	# By Number
 	Real = enum.auto()
 	Imag = enum.auto()
@@ -106,8 +104,6 @@ class MapOperation(enum.StrEnum):
 	def to_name(value: typ.Self) -> str:
 		MO = MapOperation
 		return {
-			# By User Expression
-			MO.UserExpr: '*',
 			# By Number
 			MO.Real: 'ℝ(v)',
 			MO.Imag: 'Im(v)',
@@ -159,108 +155,140 @@ class MapOperation(enum.StrEnum):
 	@staticmethod
 	def by_element_shape(shape: tuple[int, ...] | None) -> list[typ.Self]:
 		MO = MapOperation
-		if shape == 'noshape':
-			return []
 
-		# By Number
-		if shape is None:
-			return [
-				MO.Real,
-				MO.Imag,
-				MO.Abs,
-				MO.Sq,
-				MO.Sqrt,
-				MO.InvSqrt,
-				MO.Cos,
-				MO.Sin,
-				MO.Tan,
-				MO.Acos,
-				MO.Asin,
-				MO.Atan,
-				MO.Sinc,
-			]
+		match shape:
+			case 'noshape':
+				return []
 
-		# By Vector
-		if len(shape) == 1:
-			return [
-				MO.Norm2,
-			]
-		# By Matrix
-		if len(shape) == 2:
-			return [
-				MO.Det,
-				MO.Cond,
-				MO.NormFro,
-				MO.Rank,
-				MO.Diag,
-				MO.EigVals,
-				MO.SvdVals,
-				MO.Inv,
-				MO.Tra,
-				MO.Qr,
-				MO.Chol,
-				MO.Svd,
-			]
+			# By Number
+			case None:
+				return [
+					MO.Real,
+					MO.Imag,
+					MO.Abs,
+					MO.Sq,
+					MO.Sqrt,
+					MO.InvSqrt,
+					MO.Cos,
+					MO.Sin,
+					MO.Tan,
+					MO.Acos,
+					MO.Asin,
+					MO.Atan,
+					MO.Sinc,
+				]
+
+		match len(shape):
+			# By Vector
+			case 1:
+				return [
+					MO.Norm2,
+				]
+			# By Matrix
+			case 2:
+				return [
+					MO.Det,
+					MO.Cond,
+					MO.NormFro,
+					MO.Rank,
+					MO.Diag,
+					MO.EigVals,
+					MO.SvdVals,
+					MO.Inv,
+					MO.Tra,
+					MO.Qr,
+					MO.Chol,
+					MO.Svd,
+				]
 
 		return []
 
-	def jax_func_expr(self, user_expr_func: ct.LazyValueFuncFlow):
+	####################
+	# - Function Properties
+	####################
+	@property
+	def sp_func(self):
 		MO = MapOperation
-		if self == MO.UserExpr:
-			return lambda data: user_expr_func.func(data)
-
-		msg = "Can't generate JAX function for user-provided expression when MapOperation is not `UserExpr`"
-		raise ValueError(msg)
+		return {
+			# By Number
+			MO.Real: lambda expr: sp.re(expr),
+			MO.Imag: lambda expr: sp.im(expr),
+			MO.Abs: lambda expr: sp.Abs(expr),
+			MO.Sq: lambda expr: expr**2,
+			MO.Sqrt: lambda expr: sp.sqrt(expr),
+			MO.InvSqrt: lambda expr: 1 / sp.sqrt(expr),
+			MO.Cos: lambda expr: sp.cos(expr),
+			MO.Sin: lambda expr: sp.sin(expr),
+			MO.Tan: lambda expr: sp.tan(expr),
+			MO.Acos: lambda expr: sp.acos(expr),
+			MO.Asin: lambda expr: sp.asin(expr),
+			MO.Atan: lambda expr: sp.atan(expr),
+			MO.Sinc: lambda expr: sp.sinc(expr),
+			# By Vector
+			# Vector -> Number
+			MO.Norm2: lambda expr: sp.sqrt(expr.T @ expr),
+			# By Matrix
+			# Matrix -> Number
+			MO.Det: lambda expr: sp.det(expr),
+			MO.Cond: lambda expr: expr.condition_number(),
+			MO.NormFro: lambda expr: expr.norm(ord='fro'),
+			MO.Rank: lambda expr: expr.rank(),
+			# Matrix -> Vec
+			MO.Diag: lambda expr: expr.diagonal(),
+			MO.EigVals: lambda expr: sp.Matrix(list(expr.eigenvals().keys())),
+			MO.SvdVals: lambda expr: expr.singular_values(),
+			# Matrix -> Matrix
+			MO.Inv: lambda expr: expr.inv(),
+			MO.Tra: lambda expr: expr.T,
+			# Matrix -> Matrices
+			MO.Qr: lambda expr: expr.QRdecomposition(),
+			MO.Chol: lambda expr: expr.cholesky(),
+			MO.Svd: lambda expr: expr.singular_value_decomposition(),
+		}[self]
 
 	@property
 	def jax_func(self):
 		MO = MapOperation
-		if self == MO.UserExpr:
-			msg = "Can't generate JAX function without user-provided expression when MapOperation is `UserExpr`"
-			raise ValueError(msg)
-
 		return {
 			# By Number
-			MO.Real: lambda data: jnp.real(data),
-			MO.Imag: lambda data: jnp.imag(data),
-			MO.Abs: lambda data: jnp.abs(data),
-			MO.Sq: lambda data: jnp.square(data),
-			MO.Sqrt: lambda data: jnp.sqrt(data),
-			MO.InvSqrt: lambda data: 1 / jnp.sqrt(data),
-			MO.Cos: lambda data: jnp.cos(data),
-			MO.Sin: lambda data: jnp.sin(data),
-			MO.Tan: lambda data: jnp.tan(data),
-			MO.Acos: lambda data: jnp.acos(data),
-			MO.Asin: lambda data: jnp.asin(data),
-			MO.Atan: lambda data: jnp.atan(data),
-			MO.Sinc: lambda data: jnp.sinc(data),
+			MO.Real: lambda expr: jnp.real(expr),
+			MO.Imag: lambda expr: jnp.imag(expr),
+			MO.Abs: lambda expr: jnp.abs(expr),
+			MO.Sq: lambda expr: jnp.square(expr),
+			MO.Sqrt: lambda expr: jnp.sqrt(expr),
+			MO.InvSqrt: lambda expr: 1 / jnp.sqrt(expr),
+			MO.Cos: lambda expr: jnp.cos(expr),
+			MO.Sin: lambda expr: jnp.sin(expr),
+			MO.Tan: lambda expr: jnp.tan(expr),
+			MO.Acos: lambda expr: jnp.acos(expr),
+			MO.Asin: lambda expr: jnp.asin(expr),
+			MO.Atan: lambda expr: jnp.atan(expr),
+			MO.Sinc: lambda expr: jnp.sinc(expr),
 			# By Vector
 			# Vector -> Number
-			MO.Norm2: lambda data: jnp.linalg.norm(data, ord=2, axis=-1),
+			MO.Norm2: lambda expr: jnp.linalg.norm(expr, ord=2, axis=-1),
 			# By Matrix
 			# Matrix -> Number
-			MO.Det: lambda data: jnp.linalg.det(data),
-			MO.Cond: lambda data: jnp.linalg.cond(data),
-			MO.NormFro: lambda data: jnp.linalg.matrix_norm(data, ord='fro'),
-			MO.Rank: lambda data: jnp.linalg.matrix_rank(data),
+			MO.Det: lambda expr: jnp.linalg.det(expr),
+			MO.Cond: lambda expr: jnp.linalg.cond(expr),
+			MO.NormFro: lambda expr: jnp.linalg.matrix_norm(expr, ord='fro'),
+			MO.Rank: lambda expr: jnp.linalg.matrix_rank(expr),
 			# Matrix -> Vec
-			MO.Diag: lambda data: jnp.diagonal(data, axis1=-2, axis2=-1),
-			MO.EigVals: lambda data: jnp.linalg.eigvals(data),
-			MO.SvdVals: lambda data: jnp.linalg.svdvals(data),
+			MO.Diag: lambda expr: jnp.diagonal(expr, axis1=-2, axis2=-1),
+			MO.EigVals: lambda expr: jnp.linalg.eigvals(expr),
+			MO.SvdVals: lambda expr: jnp.linalg.svdvals(expr),
 			# Matrix -> Matrix
-			MO.Inv: lambda data: jnp.linalg.inv(data),
-			MO.Tra: lambda data: jnp.matrix_transpose(data),
+			MO.Inv: lambda expr: jnp.linalg.inv(expr),
+			MO.Tra: lambda expr: jnp.matrix_transpose(expr),
 			# Matrix -> Matrices
-			MO.Qr: lambda data: jnp.linalg.qr(data),
-			MO.Chol: lambda data: jnp.linalg.cholesky(data),
-			MO.Svd: lambda data: jnp.linalg.svd(data),
+			MO.Qr: lambda expr: jnp.linalg.qr(expr),
+			MO.Chol: lambda expr: jnp.linalg.cholesky(expr),
+			MO.Svd: lambda expr: jnp.linalg.svd(expr),
 		}[self]
 
 	def transform_info(self, info: ct.InfoFlow):
 		MO = MapOperation
 		return {
-			# By User Expression
-			MO.UserExpr: '*',
 			# By Number
 			MO.Real: lambda: info.set_output_mathtype(spux.MathType.Real),
 			MO.Imag: lambda: info.set_output_mathtype(spux.MathType.Real),
@@ -294,9 +322,12 @@ class MapOperation(enum.StrEnum):
 			),
 			## TODO: Matrix -> Vec
 			## TODO: Matrix -> Matrices
-		}.get(self, info)()
+		}.get(self, lambda: info)()
 
 
+####################
+# - Node
+####################
 class MapMathNode(base.MaxwellSimNode):
 	r"""Applies a function by-structure to the data.
 
@@ -390,11 +421,23 @@ class MapMathNode(base.MaxwellSimNode):
 	####################
 	# - Properties
 	####################
-	operation: MapOperation = bl_cache.BLField(
-		enum_cb=lambda self, _: self.search_operations()
+	@events.on_value_changed(
+		socket_name={'Expr'},
+		input_sockets={'Expr'},
+		input_socket_kinds={'Expr': ct.FlowKind.Info},
+		input_sockets_optional={'Expr': True},
 	)
+	def on_input_exprs_changed(self, input_sockets) -> None:  # noqa: D102
+		has_info = not ct.FlowSignal.check(input_sockets['Expr'])
 
-	@property
+		info_pending = ct.FlowSignal.check_single(
+			input_sockets['Expr'], ct.FlowSignal.FlowPending
+		)
+
+		if has_info and not info_pending:
+			self.expr_output_shape = bl_cache.Signal.InvalidateCache
+
+	@bl_cache.cached_bl_property()
 	def expr_output_shape(self) -> ct.InfoFlow | None:
 		info = self._compute_input('Expr', kind=ct.FlowKind.Info)
 		has_info = not ct.FlowSignal.check(info)
@@ -403,6 +446,11 @@ class MapMathNode(base.MaxwellSimNode):
 
 		return 'noshape'
 
+	operation: MapOperation = bl_cache.BLField(
+		enum_cb=lambda self, _: self.search_operations(),
+		cb_depends_on={'expr_output_shape'},
+	)
+
 	def search_operations(self) -> list[ct.BLEnumElement]:
 		if self.expr_output_shape != 'noshape':
 			return [
@@ -426,110 +474,58 @@ class MapMathNode(base.MaxwellSimNode):
 		layout.prop(self, self.blfields['operation'], text='')
 
 	####################
-	# - Events
+	# - FlowKind.Value|LazyValueFunc
 	####################
-	@events.on_value_changed(
-		# Trigger
-		socket_name='Expr',
-		run_on_init=True,
-	)
-	def on_input_changed(self):
-		if self.operation not in MapOperation.by_element_shape(self.expr_output_shape):
-			self.operation = bl_cache.Signal.ResetEnumItems
-
-	@events.on_value_changed(
-		# Trigger
-		prop_name={'operation'},
-		run_on_init=True,
-		# Loaded
+	@events.computes_output_socket(
+		'Expr',
+		kind=ct.FlowKind.Value,
 		props={'operation'},
+		input_sockets={'Expr'},
 	)
-	def on_operation_changed(self, props: dict) -> None:
+	def compute_value(self, props, input_sockets) -> ct.ValueFlow | ct.FlowSignal:
 		operation = props['operation']
+		expr = input_sockets['Expr']
 
-		# UserExpr: Add/Remove Input Socket
-		if operation == MapOperation.UserExpr:
-			current_bl_socket = self.loose_input_sockets.get('Mapper')
-			if current_bl_socket is None:
-				self.loose_input_sockets = {
-					'Mapper': sockets.ExprSocketDef(
-						symbols={X_COMPLEX},
-						default_value=X_COMPLEX,
-						mathtype=spux.MathType.Complex,
-					),
-				}
+		has_expr_value = not ct.FlowSignal.check(expr)
 
-		elif self.loose_input_sockets:
-			self.loose_input_sockets = {}
+		# Compute Sympy Function
+		## -> The operation enum directly provides the appropriate function.
+		if has_expr_value and operation is not None:
+			operation.sp_func(expr)
+
+		return ct.Flowsignal.FlowPending
 
-	####################
-	# - Compute: LazyValueFunc / Array
-	####################
 	@events.computes_output_socket(
 		'Expr',
 		kind=ct.FlowKind.LazyValueFunc,
 		props={'operation'},
-		input_sockets={'Expr', 'Mapper'},
+		input_sockets={'Expr'},
 		input_socket_kinds={
 			'Expr': ct.FlowKind.LazyValueFunc,
-			'Mapper': ct.FlowKind.LazyValueFunc,
 		},
-		input_sockets_optional={'Mapper': True},
 	)
-	def compute_data(self, props: dict, input_sockets: dict):
+	def compute_func(
+		self, props, input_sockets
+	) -> ct.LazyValueFuncFlow | ct.FlowSignal:
 		operation = props['operation']
 		expr = input_sockets['Expr']
-		mapper = input_sockets['Mapper']
 
 		has_expr = not ct.FlowSignal.check(expr)
-		has_mapper = not ct.FlowSignal.check(mapper)
 
 		if has_expr and operation is not None:
-			if not has_mapper:
-				return expr.compose_within(
-					operation.jax_func,
-					supports_jax=True,
-				)
-			if operation == MapOperation.UserExpr and has_mapper:
-				return expr.compose_within(
-					operation.jax_func_expr(user_expr_func=mapper),
-					supports_jax=True,
-				)
-		return ct.FlowSignal.FlowPending
-
-	@events.computes_output_socket(
-		'Expr',
-		kind=ct.FlowKind.Array,
-		output_sockets={'Expr'},
-		output_socket_kinds={
-			'Expr': {ct.FlowKind.LazyValueFunc, ct.FlowKind.Params},
-		},
-		unit_systems={'BlenderUnits': ct.UNITS_BLENDER},
-	)
-	def compute_array(self, output_sockets, unit_systems) -> ct.ArrayFlow:
-		lazy_value_func = output_sockets['Expr'][ct.FlowKind.LazyValueFunc]
-		params = output_sockets['Expr'][ct.FlowKind.Params]
-
-		has_lazy_value_func = not ct.FlowSignal.check(lazy_value_func)
-		has_params = not ct.FlowSignal.check(params)
-
-		if has_lazy_value_func and has_params:
-			unit_system = unit_systems['BlenderUnits']
-			return ct.ArrayFlow(
-				values=lazy_value_func.func_jax(
-					*params.scaled_func_args(unit_system),
-					**params.scaled_func_kwargs(unit_system),
-				),
+			return expr.compose_within(
+				operation.jax_func,
+				supports_jax=True,
 			)
 		return ct.FlowSignal.FlowPending
 
 	####################
-	# - Compute Auxiliary: Info / Params
+	# - FlowKind.Info|Params
 	####################
 	@events.computes_output_socket(
 		'Expr',
 		kind=ct.FlowKind.Info,
-		props={'active_socket_set', 'operation'},
+		props={'operation'},
 		input_sockets={'Expr'},
 		input_socket_kinds={'Expr': ct.FlowKind.Info},
 	)