Delta Neighbourhood Deleted Neighbourhood of a Point in Real Numbers

[@sajjadmahesar4041]

Thank you very much anil Sir Thank you

[@emmanuelarthur3081]

Well explained

[@varunvox4441]

thank you for valuable class ....it is easy to understand

[@aniizuchukwustanley4066]

Thank you sir

[@dunstanbanyaa986]

Sir the whatsapp invite link have been reset. Can l have the new link

[@trishabhsingore9313]

Sir did your maths whatsApp group still exist if so Provide me the link

[@malatighoshghosh4217]

sir,deleted neighbourhood N(0,pi/2) means what?

[@MathematicsTutor]

pi/4 is excluded

[@godwinfleagbo804]

Hello sir, thanks for the lesson. Please the group link is revoked. I wish to join your WhatsApp platform. Thank you

[@FaisalKhan-ew9eo]

Is any mathematican here who can help me