diff --git a/kmath-core/src/commonMain/kotlin/scientifik/kmath/operations/NumberAlgebra.kt b/kmath-core/src/commonMain/kotlin/scientifik/kmath/operations/NumberAlgebra.kt
index 3fb57656c..953c5a112 100644
--- a/kmath-core/src/commonMain/kotlin/scientifik/kmath/operations/NumberAlgebra.kt
+++ b/kmath-core/src/commonMain/kotlin/scientifik/kmath/operations/NumberAlgebra.kt
@@ -7,7 +7,6 @@ import kotlin.math.pow as kpow
  * Advanced Number-like field that implements basic operations
  */
 interface ExtendedFieldOperations<T> :
-    FieldOperations<T>,
     InverseTrigonometricOperations<T>,
     PowerOperations<T>,
     ExponentialOperations<T> {
@@ -24,9 +23,8 @@ interface ExtendedFieldOperations<T> :
         PowerOperations.SQRT_OPERATION -> sqrt(arg)
         ExponentialOperations.EXP_OPERATION -> exp(arg)
         ExponentialOperations.LN_OPERATION -> ln(arg)
-        else -> super<InverseTrigonometricOperations>.unaryOperation(operation, arg)
+        else -> super.unaryOperation(operation, arg)
     }
-
 }
 
 interface ExtendedField<T> : ExtendedFieldOperations<T>, Field<T> {
diff --git a/kmath-core/src/commonMain/kotlin/scientifik/kmath/operations/OptionalOperations.kt b/kmath-core/src/commonMain/kotlin/scientifik/kmath/operations/OptionalOperations.kt
index 542d6376b..709f0260f 100644
--- a/kmath-core/src/commonMain/kotlin/scientifik/kmath/operations/OptionalOperations.kt
+++ b/kmath-core/src/commonMain/kotlin/scientifik/kmath/operations/OptionalOperations.kt
@@ -64,7 +64,7 @@ fun <T : MathElement<out PowerOperations<T>>> sqr(arg: T): T = arg pow 2.0
 
 /* Exponential */
 
-interface ExponentialOperations<T>: Algebra<T> {
+interface ExponentialOperations<T> : Algebra<T> {
     fun exp(arg: T): T
     fun ln(arg: T): T
 
@@ -81,4 +81,4 @@ interface Norm<in T : Any, out R> {
     fun norm(arg: T): R
 }
 
-fun <T : MathElement<out Norm<T, R>>, R> norm(arg: T): R = arg.context.norm(arg)
\ No newline at end of file
+fun <T : MathElement<out Norm<T, R>>, R> norm(arg: T): R = arg.context.norm(arg)
diff --git a/kmath-core/src/commonMain/kotlin/scientifik/kmath/structures/RealBufferField.kt b/kmath-core/src/commonMain/kotlin/scientifik/kmath/structures/RealBufferField.kt
index 2fb6d15d4..826203d1f 100644
--- a/kmath-core/src/commonMain/kotlin/scientifik/kmath/structures/RealBufferField.kt
+++ b/kmath-core/src/commonMain/kotlin/scientifik/kmath/structures/RealBufferField.kt
@@ -9,185 +9,171 @@ import kotlin.math.*
  * A simple field over linear buffers of [Double]
  */
 object RealBufferFieldOperations : ExtendedFieldOperations<Buffer<Double>> {
-
-    override fun add(a: Buffer<Double>, b: Buffer<Double>): DoubleBuffer {
+    override fun add(a: Buffer<Double>, b: Buffer<Double>): RealBuffer {
         require(b.size == a.size) { "The size of the first buffer ${a.size} should be the same as for second one: ${b.size} " }
 
-        return if (a is DoubleBuffer && b is DoubleBuffer) {
+        return if (a is RealBuffer && b is RealBuffer) {
             val aArray = a.array
             val bArray = b.array
-            DoubleBuffer(DoubleArray(a.size) { aArray[it] + bArray[it] })
-        } else {
-            DoubleBuffer(DoubleArray(a.size) { a[it] + b[it] })
-        }
+            RealBuffer(DoubleArray(a.size) { aArray[it] + bArray[it] })
+        } else
+            RealBuffer(DoubleArray(a.size) { a[it] + b[it] })
     }
 
-    override fun multiply(a: Buffer<Double>, k: Number): DoubleBuffer {
+    override fun multiply(a: Buffer<Double>, k: Number): RealBuffer {
         val kValue = k.toDouble()
 
-        return if (a is DoubleBuffer) {
+        return if (a is RealBuffer) {
             val aArray = a.array
-            DoubleBuffer(DoubleArray(a.size) { aArray[it] * kValue })
-        } else {
-            DoubleBuffer(DoubleArray(a.size) { a[it] * kValue })
-        }
+            RealBuffer(DoubleArray(a.size) { aArray[it] * kValue })
+        } else
+            RealBuffer(DoubleArray(a.size) { a[it] * kValue })
     }
 
-    override fun multiply(a: Buffer<Double>, b: Buffer<Double>): DoubleBuffer {
+    override fun multiply(a: Buffer<Double>, b: Buffer<Double>): RealBuffer {
         require(b.size == a.size) { "The size of the first buffer ${a.size} should be the same as for second one: ${b.size} " }
 
-        return if (a is DoubleBuffer && b is DoubleBuffer) {
+        return if (a is RealBuffer && b is RealBuffer) {
             val aArray = a.array
             val bArray = b.array
-            DoubleBuffer(DoubleArray(a.size) { aArray[it] * bArray[it] })
-        } else {
-            DoubleBuffer(DoubleArray(a.size) { a[it] * b[it] })
-        }
+            RealBuffer(DoubleArray(a.size) { aArray[it] * bArray[it] })
+        } else
+            RealBuffer(DoubleArray(a.size) { a[it] * b[it] })
     }
 
-    override fun divide(a: Buffer<Double>, b: Buffer<Double>): DoubleBuffer {
+    override fun divide(a: Buffer<Double>, b: Buffer<Double>): RealBuffer {
         require(b.size == a.size) { "The size of the first buffer ${a.size} should be the same as for second one: ${b.size} " }
 
-        return if (a is DoubleBuffer && b is DoubleBuffer) {
+        return if (a is RealBuffer && b is RealBuffer) {
             val aArray = a.array
             val bArray = b.array
-            DoubleBuffer(DoubleArray(a.size) { aArray[it] / bArray[it] })
-        } else {
-            DoubleBuffer(DoubleArray(a.size) { a[it] / b[it] })
-        }
+            RealBuffer(DoubleArray(a.size) { aArray[it] / bArray[it] })
+        } else
+            RealBuffer(DoubleArray(a.size) { a[it] / b[it] })
     }
 
-    override fun sin(arg: Buffer<Double>): DoubleBuffer = if (arg is DoubleBuffer) {
+    override fun sin(arg: Buffer<Double>): RealBuffer = if (arg is RealBuffer) {
         val array = arg.array
-        DoubleBuffer(DoubleArray(arg.size) { sin(array[it]) })
+        RealBuffer(DoubleArray(arg.size) { sin(array[it]) })
     } else {
-        DoubleBuffer(DoubleArray(arg.size) { sin(arg[it]) })
+        RealBuffer(DoubleArray(arg.size) { sin(arg[it]) })
     }
 
-    override fun cos(arg: Buffer<Double>): DoubleBuffer = if (arg is DoubleBuffer) {
+    override fun cos(arg: Buffer<Double>): RealBuffer = if (arg is RealBuffer) {
         val array = arg.array
-        DoubleBuffer(DoubleArray(arg.size) { cos(array[it]) })
+        RealBuffer(DoubleArray(arg.size) { cos(array[it]) })
+    } else
+        RealBuffer(DoubleArray(arg.size) { cos(arg[it]) })
+
+    override fun tan(arg: Buffer<Double>): RealBuffer = if (arg is RealBuffer) {
+        val array = arg.array
+        RealBuffer(DoubleArray(arg.size) { tan(array[it]) })
+    } else
+        RealBuffer(DoubleArray(arg.size) { tan(arg[it]) })
+
+    override fun asin(arg: Buffer<Double>): RealBuffer = if (arg is RealBuffer) {
+        val array = arg.array
+        RealBuffer(DoubleArray(arg.size) { asin(array[it]) })
     } else {
-        DoubleBuffer(DoubleArray(arg.size) { cos(arg[it]) })
+        RealBuffer(DoubleArray(arg.size) { asin(arg[it]) })
     }
 
-    override fun tan(arg: Buffer<Double>): DoubleBuffer = if (arg is DoubleBuffer) {
+    override fun acos(arg: Buffer<Double>): RealBuffer = if (arg is RealBuffer) {
         val array = arg.array
-        DoubleBuffer(DoubleArray(arg.size) { tan(array[it]) })
-    } else {
-        DoubleBuffer(DoubleArray(arg.size) { tan(arg[it]) })
-    }
+        RealBuffer(DoubleArray(arg.size) { acos(array[it]) })
+    } else
+        RealBuffer(DoubleArray(arg.size) { acos(arg[it]) })
 
-    override fun asin(arg: Buffer<Double>): DoubleBuffer = if (arg is DoubleBuffer) {
+    override fun atan(arg: Buffer<Double>): RealBuffer = if (arg is RealBuffer) {
         val array = arg.array
-        DoubleBuffer(DoubleArray(arg.size) { asin(array[it]) })
-    } else {
-        DoubleBuffer(DoubleArray(arg.size) { asin(arg[it]) })
-    }
+        RealBuffer(DoubleArray(arg.size) { atan(array[it]) })
+    } else
+        RealBuffer(DoubleArray(arg.size) { atan(arg[it]) })
 
-    override fun acos(arg: Buffer<Double>): DoubleBuffer = if (arg is DoubleBuffer) {
+    override fun power(arg: Buffer<Double>, pow: Number): RealBuffer = if (arg is RealBuffer) {
         val array = arg.array
-        DoubleBuffer(DoubleArray(arg.size) { acos(array[it]) })
-    } else {
-        DoubleBuffer(DoubleArray(arg.size) { acos(arg[it]) })
-    }
+        RealBuffer(DoubleArray(arg.size) { array[it].pow(pow.toDouble()) })
+    } else
+        RealBuffer(DoubleArray(arg.size) { arg[it].pow(pow.toDouble()) })
 
-    override fun atan(arg: Buffer<Double>): DoubleBuffer = if (arg is DoubleBuffer) {
+    override fun exp(arg: Buffer<Double>): RealBuffer = if (arg is RealBuffer) {
         val array = arg.array
-        DoubleBuffer(DoubleArray(arg.size) { atan(array[it]) })
-    } else {
-        DoubleBuffer(DoubleArray(arg.size) { atan(arg[it]) })
-    }
+        RealBuffer(DoubleArray(arg.size) { exp(array[it]) })
+    } else
+        RealBuffer(DoubleArray(arg.size) { exp(arg[it]) })
 
-    override fun power(arg: Buffer<Double>, pow: Number): DoubleBuffer = if (arg is DoubleBuffer) {
+    override fun ln(arg: Buffer<Double>): RealBuffer = if (arg is RealBuffer) {
         val array = arg.array
-        DoubleBuffer(DoubleArray(arg.size) { array[it].pow(pow.toDouble()) })
-    } else {
-        DoubleBuffer(DoubleArray(arg.size) { arg[it].pow(pow.toDouble()) })
-    }
-
-    override fun exp(arg: Buffer<Double>): DoubleBuffer = if (arg is DoubleBuffer) {
-        val array = arg.array
-        DoubleBuffer(DoubleArray(arg.size) { exp(array[it]) })
-    } else {
-        DoubleBuffer(DoubleArray(arg.size) { exp(arg[it]) })
-    }
-
-    override fun ln(arg: Buffer<Double>): DoubleBuffer = if (arg is DoubleBuffer) {
-        val array = arg.array
-        DoubleBuffer(DoubleArray(arg.size) { ln(array[it]) })
-    } else {
-        DoubleBuffer(DoubleArray(arg.size) { ln(arg[it]) })
-    }
+        RealBuffer(DoubleArray(arg.size) { ln(array[it]) })
+    } else
+        RealBuffer(DoubleArray(arg.size) { ln(arg[it]) })
 }
 
 class RealBufferField(val size: Int) : ExtendedField<Buffer<Double>> {
+    override val zero: Buffer<Double> by lazy { RealBuffer(size) { 0.0 } }
+    override val one: Buffer<Double> by lazy { RealBuffer(size) { 1.0 } }
 
-    override val zero: Buffer<Double> by lazy { DoubleBuffer(size) { 0.0 } }
-
-    override val one: Buffer<Double> by lazy { DoubleBuffer(size) { 1.0 } }
-
-    override fun add(a: Buffer<Double>, b: Buffer<Double>): DoubleBuffer {
+    override fun add(a: Buffer<Double>, b: Buffer<Double>): RealBuffer {
         require(a.size == size) { "The buffer size ${a.size} does not match context size $size" }
         return RealBufferFieldOperations.add(a, b)
     }
 
-    override fun multiply(a: Buffer<Double>, k: Number): DoubleBuffer {
+    override fun multiply(a: Buffer<Double>, k: Number): RealBuffer {
         require(a.size == size) { "The buffer size ${a.size} does not match context size $size" }
         return RealBufferFieldOperations.multiply(a, k)
     }
 
-    override fun multiply(a: Buffer<Double>, b: Buffer<Double>): DoubleBuffer {
+    override fun multiply(a: Buffer<Double>, b: Buffer<Double>): RealBuffer {
         require(a.size == size) { "The buffer size ${a.size} does not match context size $size" }
         return RealBufferFieldOperations.multiply(a, b)
     }
 
-    override fun divide(a: Buffer<Double>, b: Buffer<Double>): DoubleBuffer {
+    override fun divide(a: Buffer<Double>, b: Buffer<Double>): RealBuffer {
         require(a.size == size) { "The buffer size ${a.size} does not match context size $size" }
         return RealBufferFieldOperations.divide(a, b)
     }
 
-    override fun sin(arg: Buffer<Double>): DoubleBuffer {
+    override fun sin(arg: Buffer<Double>): RealBuffer {
         require(arg.size == size) { "The buffer size ${arg.size} does not match context size $size" }
         return RealBufferFieldOperations.sin(arg)
     }
 
-    override fun cos(arg: Buffer<Double>): DoubleBuffer {
+    override fun cos(arg: Buffer<Double>): RealBuffer {
         require(arg.size == size) { "The buffer size ${arg.size} does not match context size $size" }
         return RealBufferFieldOperations.cos(arg)
     }
 
-    override fun tan(arg: Buffer<Double>): DoubleBuffer {
+    override fun tan(arg: Buffer<Double>): RealBuffer {
         require(arg.size == size) { "The buffer size ${arg.size} does not match context size $size" }
         return RealBufferFieldOperations.tan(arg)
     }
 
-    override fun asin(arg: Buffer<Double>): DoubleBuffer {
+    override fun asin(arg: Buffer<Double>): RealBuffer {
         require(arg.size == size) { "The buffer size ${arg.size} does not match context size $size" }
         return RealBufferFieldOperations.asin(arg)
     }
 
-    override fun acos(arg: Buffer<Double>): DoubleBuffer {
+    override fun acos(arg: Buffer<Double>): RealBuffer {
         require(arg.size == size) { "The buffer size ${arg.size} does not match context size $size" }
         return RealBufferFieldOperations.acos(arg)
     }
 
-    override fun atan(arg: Buffer<Double>): DoubleBuffer {
+    override fun atan(arg: Buffer<Double>): RealBuffer {
         require(arg.size == size) { "The buffer size ${arg.size} does not match context size $size" }
         return RealBufferFieldOperations.atan(arg)
     }
 
-    override fun power(arg: Buffer<Double>, pow: Number): DoubleBuffer {
+    override fun power(arg: Buffer<Double>, pow: Number): RealBuffer {
         require(arg.size == size) { "The buffer size ${arg.size} does not match context size $size" }
         return RealBufferFieldOperations.power(arg, pow)
     }
 
-    override fun exp(arg: Buffer<Double>): DoubleBuffer {
+    override fun exp(arg: Buffer<Double>): RealBuffer {
         require(arg.size == size) { "The buffer size ${arg.size} does not match context size $size" }
         return RealBufferFieldOperations.exp(arg)
     }
 
-    override fun ln(arg: Buffer<Double>): DoubleBuffer {
+    override fun ln(arg: Buffer<Double>): RealBuffer {
         require(arg.size == size) { "The buffer size ${arg.size} does not match context size $size" }
         return RealBufferFieldOperations.ln(arg)
     }