Companion access

The companion is provided by TensorLearners Publications for readers of the listed books.

Your reader account

Register with an email you control. Each private activation code can be claimed by one reader account. Additional books can be added to the same account. Keep your account and activation code private.

Exercises and live usage

Reviewed fixtures and local exercises are labelled separately from live model outputs. Local checks do not guarantee factual accuracy. Live model attempts have daily and monthly allowances, and may be paused when the platform budget is reached. Failed or uncertain attempts also count towards the attempt allowance. Your reading resources and local exercises remain usable when live credits are exhausted.

Purchases and availability

Follow the access duration, included features, and purchase/refund terms supplied with your edition or order. A physical copy requires its individual activation code. An optional direct checkout, when offered, sells digital companion access as described at checkout; it does not arrange physical book delivery.

Support

For an activation or account problem, contact TensorLearners through the official contact details supplied with your book or purchase. A support replacement requires verification and is recorded for accountability.