{⟦
  org() ↦ ⟦
    eolang() ↦ ⟦
      math() ↦ ⟦
        numbers(sequence) ↦ ⟦
          φ ↦ ξ.sequence,
          max() ↦ ⟦
            lst ↦ Φ̇.structs.list(ξ.ρ.sequence),
            φ ↦ ξ.lst.is-empty.if(
              Φ̇.error("Can't get max number from empty sequence"),
              ξ.lst.reduced(
                Φ̇.negative-infinity,
                ⟦
                  max ↦ ∅,
                  item ↦ ∅,
                  φ ↦ ξ.item.as-number.gt(ξ.max).if(ξ.item, ξ.max)
                ⟧
              )
            )
          ⟧,
          min() ↦ ⟦
            lst ↦ Φ̇.structs.list(ξ.ρ.sequence),
            φ ↦ ξ.lst.is-empty.if(
              Φ̇.error("Can't get min number from empty sequence"),
              ξ.lst.reduced(
                Φ̇.positive-infinity,
                ⟦
                  min ↦ ∅,
                  item ↦ ∅,
                  φ ↦ ξ.min.gt(ξ.item.as-number).if(ξ.item, ξ.min)
                ⟧
              )
            )
          ⟧
        ⟧,
        λ ⤍ Package
      ⟧,
      λ ⤍ Package
    ⟧,
    λ ⤍ Package
  ⟧
⟧}