They are not of great importance except that some of them were examining curves using projective methods, techniques which would be characteristic of Cremona's later important mathematics.
Sila ay hindi pinakamahalaga maliban na ang ilan sa mga ito ay ang pagsusuri kurva gamit projective paraan, pamamaraan na kung saan ay magiging katangian ng Cremona's mamaya mahalaga sa matematika.