diff --git a/kmath-noa/src/main/kotlin/space/kscience/kmath/noa/Noa.kt b/kmath-noa/src/main/kotlin/space/kscience/kmath/noa/Noa.kt
new file mode 100644
index 000000000..20a5612d4
--- /dev/null
+++ b/kmath-noa/src/main/kotlin/space/kscience/kmath/noa/Noa.kt
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2018-2021 KMath contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package space.kscience.kmath.noa
+
+import space.kscience.kmath.noa.memory.NoaScope
+import space.kscience.kmath.noa.memory.withNoaScope
+
+public class NoaDouble
+internal constructor(scope: NoaScope) :
+        NoaDoubleAlgebra(scope)
+
+public fun <R> NoaDouble(block: NoaDouble.() -> R): R? =
+    withNoaScope { NoaDouble(this).block() }
+
+public fun <R> NoaDouble(scope: NoaScope, block: NoaDouble.() -> R): R? =
+    withNoaScope(scope) { NoaDouble(this).block() }
+
+public class NoaFloat
+internal constructor(scope: NoaScope) :
+    NoaFloatAlgebra(scope)
+
+public fun <R> NoaFloat(block: NoaFloat.() -> R): R? =
+    withNoaScope { NoaFloat(this).block() }
+
+public fun <R> NoaFloat(scope: NoaScope, block: NoaFloat.() -> R): R? =
+    withNoaScope(scope) { NoaFloat(this).block() }
+
+public class NoaLong
+internal constructor(scope: NoaScope) :
+    NoaLongAlgebra(scope)
+
+public fun <R> NoaLong(block: NoaLong.() -> R): R? =
+    withNoaScope { NoaLong(this).block() }
+
+public fun <R> NoaLong(scope: NoaScope, block: NoaLong.() -> R): R? =
+    withNoaScope(scope) { NoaLong(this).block() }
+
+public class NoaInt
+internal constructor(scope: NoaScope) :
+    NoaIntAlgebra(scope)
+
+public fun <R> NoaInt(block: NoaInt.() -> R): R? =
+    withNoaScope { NoaInt(this).block() }
+
+public fun <R> NoaInt(scope: NoaScope, block: NoaInt.() -> R): R? =
+    withNoaScope(scope) { NoaInt(this).block() }
diff --git a/kmath-noa/src/main/kotlin/space/kscience/kmath/noa/algebras.kt b/kmath-noa/src/main/kotlin/space/kscience/kmath/noa/algebras.kt
index ef228d96a..b386b36ca 100644
--- a/kmath-noa/src/main/kotlin/space/kscience/kmath/noa/algebras.kt
+++ b/kmath-noa/src/main/kotlin/space/kscience/kmath/noa/algebras.kt
@@ -15,7 +15,8 @@ import space.kscience.kmath.tensors.core.TensorLinearStructure
 
 
 public sealed class NoaAlgebra<T, TensorType : NoaTensor<T>>
-constructor(protected val scope: NoaScope) : TensorAlgebra<T> {
+protected constructor(protected val scope: NoaScope) :
+    TensorAlgebra<T> {
 
     protected abstract val Tensor<T>.tensor: TensorType
 
@@ -132,8 +133,10 @@ constructor(protected val scope: NoaScope) : TensorAlgebra<T> {
 
 }
 
-public abstract class NoaPartialDivisionAlgebra<T, TensorType : NoaTensor<T>>
-internal constructor(scope: NoaScope) : NoaAlgebra<T, TensorType>(scope), LinearOpsTensorAlgebra<T>,
+public sealed class NoaPartialDivisionAlgebra<T, TensorType : NoaTensor<T>>
+protected constructor(scope: NoaScope) :
+    NoaAlgebra<T, TensorType>(scope),
+    LinearOpsTensorAlgebra<T>,
     AnalyticTensorAlgebra<T> {
 
     override operator fun Tensor<T>.div(other: Tensor<T>): TensorType {
@@ -274,7 +277,8 @@ internal constructor(scope: NoaScope) : NoaAlgebra<T, TensorType>(scope), Linear
 
 }
 
-public class NoaDoubleAlgebra(scope: NoaScope) :
+public sealed class NoaDoubleAlgebra
+protected constructor(scope: NoaScope) :
     NoaPartialDivisionAlgebra<Double, NoaDoubleTensor>(scope) {
 
     private fun Tensor<Double>.castHelper(): NoaDoubleTensor =
@@ -349,7 +353,8 @@ public class NoaDoubleAlgebra(scope: NoaScope) :
 
 }
 
-public class NoaFloatAlgebra(scope: NoaScope) :
+public sealed class NoaFloatAlgebra
+protected constructor(scope: NoaScope) :
     NoaPartialDivisionAlgebra<Float, NoaFloatTensor>(scope) {
 
     private fun Tensor<Float>.castHelper(): NoaFloatTensor =
@@ -424,7 +429,8 @@ public class NoaFloatAlgebra(scope: NoaScope) :
 
 }
 
-public class NoaLongAlgebra(scope: NoaScope) :
+public sealed class NoaLongAlgebra
+protected constructor(scope: NoaScope) :
     NoaAlgebra<Long, NoaLongTensor>(scope) {
 
     private fun Tensor<Long>.castHelper(): NoaLongTensor =
@@ -484,7 +490,8 @@ public class NoaLongAlgebra(scope: NoaScope) :
 
 }
 
-public class NoaIntAlgebra(scope: NoaScope) :
+public sealed class NoaIntAlgebra
+protected constructor(scope: NoaScope) :
     NoaAlgebra<Int, NoaIntTensor>(scope) {
 
     private fun Tensor<Int>.castHelper(): NoaIntTensor =
diff --git a/kmath-noa/src/main/kotlin/space/kscience/kmath/noa/memory/NoaScope.kt b/kmath-noa/src/main/kotlin/space/kscience/kmath/noa/memory/NoaScope.kt
index 08df2d79b..6dd2ed318 100644
--- a/kmath-noa/src/main/kotlin/space/kscience/kmath/noa/memory/NoaScope.kt
+++ b/kmath-noa/src/main/kotlin/space/kscience/kmath/noa/memory/NoaScope.kt
@@ -30,14 +30,14 @@ public class NoaScope {
     }
 }
 
-internal fun <R> withNoaScope(block: NoaScope.() -> R): R? {
+internal inline fun <R> withNoaScope(block: NoaScope.() -> R): R? {
     val noaScope = NoaScope()
     val result = try { noaScope.block() } catch (e: Throwable) { null }
     noaScope.disposeAll()
     return result
 }
 
-internal fun <R> withNoaScope(scope: NoaScope, block: NoaScope.() -> R): R? {
+internal inline fun <R> withNoaScope(scope: NoaScope, block: NoaScope.() -> R): R? {
     val noaScope = NoaScope()
     val result = try { noaScope.block() } catch (e: Throwable) { null }
     if (result == null){