Event Calendar of IISER Kolkata

Time:

4 p.m. - 7 p.m.

Venue:

103, APC Ray

Description:

[Discussion meeting of PM Lab] Prasun Mandal (IISER Kolkata)

Time:

7 p.m. - 9 p.m.

Venue:

G09, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 9 p.m.

Venue:

111, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 9 p.m.

Venue:

G09, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 9 p.m.

Venue:

111, APC Ray

Description:

Ek Pahal Classes

Time:

10 a.m. - 6 p.m.

Venue:

101, CV Raman

Description:

Admin Meeting

Time:

6 p.m. - 8 p.m.

Venue:

Ramanujan VC

Description:

MUN'dane Programe

Time:

6 p.m. - 7 p.m.

Venue:

102, APC Ray

Description:

[Extra class for CH4106] Prasun Mandal

Time:

7 p.m. - 9 p.m.

Venue:

G09, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 9 p.m.

Venue:

111, APC Ray

Description:

Ek Pahal Classes

Time:

9:30 a.m. - 12:30 p.m.

Venue:

N-315B, DPS Meeting Room, AJC Bose

Description:

SDS group meeting

Time:

10 a.m. - 3 p.m.

Venue:

101, CV Raman

Description:

57th BWC Meeting

Time:

2:30 p.m. - 4 p.m.

Venue:

Ramanujan VC

Description:

CH3105 mid-sem quiz

Time:

5 p.m. - 6 p.m.

Venue:

Ramanujan VC

Description:

CH2105 Extra class

Time:

7 p.m. - 9 p.m.

Venue:

G09, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 9 p.m.

Venue:

111, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 8 p.m.

Venue:

102, APC Ray

Description:

CH3104 class

Time:

8 a.m. - 8 p.m.

Venue:

101, CV Raman

Description:

FC & BoG Meeting

Time:

11 a.m. - 12:30 p.m.

Venue:

Asima Theatre

Description:

DCS Visitor Seminar

Time:

2 p.m. - 4 p.m.

Venue:

101, APC Ray

Description:

[CH4117-Extra class] Alakesh Bisai -- CH4117-Extra class

Time:

4 p.m. - 5:30 p.m.

Venue:

Asima Theatre

Description:

[DBS Seminar] Prof. Sagar Sengupta -- Remodeling of the epigenome: link to chemosensitivity and adjunct therapy in colon cancer

Time:

6 p.m. - 8 p.m.

Venue:

108, APC Ray

Description:

MUN'dane Programe

Time:

7 p.m. - 9 p.m.

Venue:

G09, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 9 p.m.

Venue:

111, APC Ray

Description:

Ek Pahal Classes

Time:

11 a.m. - 12:30 p.m.

Venue:

113, AJC Bose

Description:

[Group Meeting] Prof. Bipul Pal

Time:

11 a.m. - 12:30 p.m.

Venue:

101, CV Raman

Description:

Meeting (IWD Committee)

Time:

noon - 1 p.m.

Venue:

209, APC Ray

Description:

[Independent Study] Rangeet Bhattacharyya (IISER Kolkata)

Time:

2 p.m. - 3 p.m.

Venue:

111, APC Ray

Description:

Makeup class

Time:

3 p.m. - 5 p.m.

Venue:

N-315C, DBS Meeting Room, AJC Bose

Description:

DSK Lab Meeting

Time:

3 p.m. - 5 p.m.

Venue:

113, AJC Bose

Description:

[Class Test] Prof. Supratim Sengupta

Time:

7 p.m. - 9 p.m.

Venue:

G09, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 9 p.m.

Venue:

111, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 8 p.m.

Venue:

102, APC Ray

Description:

CH3104 class

Time:

11 a.m. - noon

Venue:

101, CV Raman

Description:

A meeting of the IRO section

Time:

11 a.m. - 1 p.m.

Venue:

Asima Theatre

Description:

[Pre- Submission Seminar] Mr. Madhav (DBS, IISER Kolkata) -- Pre- Submission Seminar

Time:

2:30 p.m. - 5:30 p.m.

Venue:

113, AJC Bose

Description:

[Group Meeting] Dr. N. Kamaraju

Time:

3:15 p.m. - 4:45 p.m.

Venue:

108, APC Ray

Description:

[DCS extra class CH4111] A. K. Roy

Time:

4 p.m. - 5 p.m.

Venue:

110, APC Ray

Description:

ES4103 Extra class

Time:

6:30 p.m. - 8 p.m.

Venue:

G02, APC Ray

Description:

Earth-the journal club presentations

Time:

7 p.m. - 9 p.m.

Venue:

G09, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 9 p.m.

Venue:

111, APC Ray

Description:

Ek Pahal Classes

Time:

8 p.m. - midnight

Venue:

Saha Theatre

Description:

Movie Screening

Time:

8:30 p.m. - midnight

Venue:

Ramanujan VC

Description:

Gaming session

Time:

8:30 p.m. - midnight

Venue:

G02, APC Ray

Description:

Gaming session

Time:

8:30 p.m. - midnight

Venue:

Wadia Theatre

Description:

Quizzing sessions

Time:

9 a.m. - 6 p.m.

Venue:

Ramanujan VC

Description:

MUN'dane Programe

Time:

11 a.m. - 1 p.m.

Venue:

209, APC Ray

Description:

Course HU4103

Time:

2 p.m. - 5 p.m.

Venue:

Saha Theatre

Description:

Outreach Computing Fall Fest

Time:

4 p.m. - 7 p.m.

Venue:

103, APC Ray

Description:

[Discussion meeting of PM Lab] Prasun Mandal (IISER Kolkata)

Time:

7 p.m. - 9 p.m.

Venue:

G09, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 9 p.m.

Venue:

111, APC Ray

Description:

Ek Pahal Classes

Time:

8 p.m. - midnight

Venue:

Saha Theatre

Description:

Movie Screening

Time:

8:30 p.m. - midnight

Venue:

Ramanujan VC

Description:

Gaming session

Time:

8:30 p.m. - midnight

Venue:

G02, APC Ray

Description:

Gaming session

Time:

8:30 p.m. - midnight

Venue:

Wadia Theatre

Description:

Quizzing sessions

Time:

9 a.m. - 6 p.m.

Venue:

Ramanujan VC

Description:

MUN'dane Programe

Time:

2 p.m. - 5 p.m.

Venue:

Saha Theatre

Description:

Outreach Computing Fall Fest

Time:

7 p.m. - 9 p.m.

Venue:

G09, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 9 p.m.

Venue:

111, APC Ray

Description:

Ek Pahal Classes

Time:

8 p.m. - midnight

Venue:

Saha Theatre

Description:

Movie Screening

Time:

8:30 p.m. - midnight

Venue:

Wadia Theatre

Description:

Quizzing sessions

Time:

2 p.m. - 5 p.m.

Venue:

Wadia Theatre

Description:

[Short course Lithosphere 2024] Prof. James Jackson, Prof. Supriyo Mitra, Dr. Tapabrato Sarkar, and Dr. Sanjay Kumar Mandal

Time:

2 p.m. - 8 p.m.

Venue:

Asima Theatre

Description:

[Short course Lithosphere 2024] Prof. James Jackson, Prof. Supriyo Mitra, Dr. Tapabrato Sarkar, and Dr. Sanjay Kumar Mandal

Time:

3 p.m. - 4 p.m.

Venue:

CESSI Lab

Description:

[CESSI Colloquium] Mausumi Dikpati (UCAR, High Altitude Observatory, USA) -- Global and Local Dynamics of X-flare Producing Active Regions During Solar Cycle 25 Peak-Phase

Time:

6:15 p.m. - 6:15 p.m.

Description:

[group theory] A. K. Roy

Time:

6:30 p.m. - 9 p.m.

Venue:

Saha Theatre

Description:

Student Talk: Mr N Pandey (21MS)

Time:

7 p.m. - 9 p.m.

Venue:

G09, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 9 p.m.

Venue:

111, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 9 p.m.

Venue:

112, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 8 p.m.

Venue:

Wadia Theatre

Description:

Class for CH3101

Time:

9:30 a.m. - 12:30 p.m.

Venue:

N-315B, DPS Meeting Room, AJC Bose

Description:

SDS group meeting

Time:

10 a.m. - 1 p.m.

Venue:

Wadia Theatre

Description:

Guest talk session

Time:

10 a.m. - 1 p.m.

Venue:

113, AJC Bose

Description:

[Group Meeting] Prof. Rangeet Bhattacharyya

Time:

11 a.m. - 11:45 a.m.

Venue:

101, CV Raman

Description:

NEP Meeting

Time:

11:30 a.m. - 1 p.m.

Venue:

Asima Theatre

Description:

[DCS Visitor's Seminar] Dr. Ashwani Kumar (MPI-KOFO, Germany) -- From Nanomaterials to Single Atom Catalysts: Pioneering Electrocatalysis for a Sustainable Future

Time:

1 p.m. - 2 p.m.

Venue:

110, APC Ray

Description:

ES4103 Extra class

Time:

2 p.m. - 8 p.m.

Venue:

Asima Theatre

Description:

[Short course Lithosphere 2024] Prof. James Jackson, Prof. Supriyo Mitra, Dr. Tapabrato Sarkar, and Dr. Sanjay Kumar Mandal

Time:

2 p.m. - 5 p.m.

Venue:

Wadia Theatre

Description:

[Short course Lithosphere 2024] Prof. James Jackson, Prof. Supriyo Mitra, Dr. Tapabrato Sarkar, and Dr. Sanjay Kumar Mandal

Time:

2:30 p.m. - 4 p.m.

Venue:

Online

Description:

[DPS Seminar] Dr. Lalit Mohan Kandpal (IIT-Delhi) -- Harnessing Defects in Spintronics: From Information Encoding to Energy Generation -::~::- Join: https://meet.google.com/dfs-vguy-czr -::~::-

Time:

3 p.m. - 5 p.m.

Venue:

101, CV Raman

Description:

IWD Meeting

Time:

4 p.m. - 5 p.m.

Venue:

CESSI Lab

Description:

[CESSI Seminar] Ranadeep Ghosh Dastidar (Purdue University, USA) -- Gamma Ray Bursts: Deciphering the Highest Energies of the Universe

Time:

5 p.m. - 7 p.m.

Venue:

Bose Theatre

Description:

MA1101 internal exams

Time:

6 p.m. - 7 p.m.

Venue:

Ramanujan VC

Description:

VM Class for CH2103

Time:

7 p.m. - 9 p.m.

Venue:

G09, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 9 p.m.

Venue:

111, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 8 p.m.

Venue:

Wadia Theatre

Description:

[Short course Lithosphere 2024] Prof. James Jackson, Prof. Supriyo Mitra, Dr. Tapabrato Sarkar, and Dr. Sanjay Kumar Mandal

Time:

7 p.m. - 8 p.m.

Venue:

G08, APC Ray

Description:

[Extra Class_CH3104] Dibyendu Das

Time:

7 p.m. - 9 p.m.

Venue:

112, APC Ray

Description:

Ek Pahal Classes

Time:

7:15 p.m. - 8:30 p.m.

Venue:

211, APC Ray

Description:

[Extra make up Class] Shirshendu Chowdhury

Time:

11 a.m. - 12:30 p.m.

Venue:

113, AJC Bose

Description:

[Group Meeting] Prof. Bipul Pal

Time:

11 a.m. - 11 p.m.

Venue:

212, APC Ray

Description:

[make-up class CH4111] AKR

Time:

11 a.m. - 12:30 p.m.

Venue:

110, APC Ray

Description:

[DES Alumni Talk] Mr. Rahul Subbaraman (University of Manchester, England)

Time:

2 p.m. - 4 p.m.

Venue:

Asima Theatre

Description:

[Short course Lithosphere 2024] Prof. James Jackson, Prof. Supriyo Mitra, Dr. Tapabrato Sarkar, and Dr. Sanjay Kumar Mandal

Time:

2 p.m. - 5 p.m.

Venue:

Wadia Theatre

Description:

[Short course Lithosphere 2024] Prof. James Jackson, Prof. Supriyo Mitra, Dr. Tapabrato Sarkar, and Dr. Sanjay Kumar Mandal

Time:

2 p.m. - 4 p.m.

Venue:

G08, APC Ray

Description:

Doubt clearing session CS5102

Time:

2 p.m. - 4 p.m.

Venue:

101, APC Ray

Description:

CH4104

Time:

2:30 p.m. - 4 p.m.

Venue:

Saha Theatre

Description:

[DPS Seminar] Prof. Chirantan Neogy (University of Kalyani) -- Visual Optics

Time:

3 p.m. - 5 p.m.

Venue:

101, CV Raman

Description:

Admin meeting

Time:

4 p.m. - 5:30 p.m.

Venue:

Asima Theatre

Description:

[DBS Seminar] Prof Girish Ratnaparkhi -- The making of a (remarkable) lineage: Primordial germ cells in the early embryo

Time:

5 p.m. - 6 p.m.

Venue:

Saha Theatre

Description:

[Gluon - The Physics Journal Club] Prof. Anwesh Mazumdar (HBCSE-TIFR) -- Approximations in Physics

Time:

5:30 p.m. - 8 p.m.

Venue:

Asima Theatre

Description:

[Short course Lithosphere 2024] Prof. James Jackson, Prof. Supriyo Mitra, Dr. Tapabrato Sarkar, and Dr. Sanjay Kumar Mandal

Time:

6:30 p.m. - 7:30 p.m.

Venue:

209, APC Ray

Description:

[CH4116 answer copy showing] BM

Time:

7 p.m. - 9 p.m.

Venue:

G09, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 9 p.m.

Venue:

111, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 8 p.m.

Venue:

Wadia Theatre

Description:

[Short course Lithosphere 2024] Prof. James Jackson, Prof. Supriyo Mitra, Dr. Tapabrato Sarkar, and Dr. Sanjay Kumar Mandal

Time:

7 p.m. - 8:30 p.m.

Venue:

Bose Theatre

Description:

Tutorial for CH2102 course

Time:

7 p.m. - 8:30 p.m.

Venue:

110, APC Ray

Description:

Tutorial for CH2102 course

Time:

7 p.m. - 9 p.m.

Venue:

112, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 8 p.m.

Venue:

Ramanujan VC

Description:

[Valence: Student Talk] Pritam Sadhu (IISER-K)

Time:

10 a.m. - 11 a.m.

Venue:

212, APC Ray

Description:

[DCS extra class CH4111] A. K. Roy

Time:

11 a.m. - 12:30 p.m.

Venue:

113, AJC Bose

Description:

[Meeting to finalise the specificatio] Dr. N. Kamaraju

Time:

12:45 p.m. - 2:15 p.m.

Venue:

G02, APC Ray

Description:

[Class Test 1 for CH4106] Prasun Mandal

Time:

2 p.m. - 8 p.m.

Venue:

Asima Theatre

Description:

[Short course Lithosphere 2024] Prof. James Jackson, Prof. Supriyo Mitra, Dr. Tapabrato Sarkar, and Dr. Sanjay Kumar Mandal

Time:

2 p.m. - 5 p.m.

Venue:

Wadia Theatre

Description:

[Short course Lithosphere 2024] Prof. James Jackson, Prof. Supriyo Mitra, Dr. Tapabrato Sarkar, and Dr. Sanjay Kumar Mandal

Time:

2 p.m. - 3 p.m.

Venue:

111, APC Ray

Description:

[Extra class] Satyaki -- Extra class MA 4106

Time:

2:30 p.m. - 4 p.m.

Venue:

113, AJC Bose

Description:

[Group Meeting] Prof. Amit Ghosal

Time:

3 p.m. - 5 p.m.

Venue:

N-315C, DBS Meeting Room, AJC Bose

Description:

DSK Lab Meeting

Time:

3 p.m. - 4 p.m.

Venue:

CESSI Lab

Description:

[CESSI Seminar] Maitraya Bhattacharyya (The Pennsylvania State University, USA) -- A finite element approach to radiation transport on spherical geodesic grids

Time:

3 p.m. - 5 p.m.

Venue:

101, CV Raman

Description:

Admin meeting

Time:

4 p.m. - 8 p.m.

Description:

[Short course Lithosphere 2024] Prof. James Jackson, Prof. Supriyo Mitra, Dr. Tapabrato Sarkar, and Dr. Sanjay Kumar Mandal

Time:

4 p.m. - 5 p.m.

Venue:

113, AJC Bose

Description:

[Mock Presentation] Athul P

Time:

4 p.m. - 5:30 p.m.

Venue:

219, CV Raman

Description:

World Anti- Doping Agency's (WADA)

Time:

6 p.m. - 9 p.m.

Venue:

113, AJC Bose

Description:

[Group Meeting] Prof. Debansu Chaudhuri

Time:

7 p.m. - 9 p.m.

Venue:

G09, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 9 p.m.

Venue:

111, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 9 p.m.

Venue:

112, APC Ray

Description:

Ek Pahal Classes

Time:

8 a.m. - 6 p.m.

Venue:

RN Tagore

Description:

Aspects of Gravity and Cosmology

Time:

11 a.m. - noon

Venue:

113, AJC Bose

Description:

[Presentation] Projukta Das

Time:

noon - 1 p.m.

Venue:

110, APC Ray

Description:

Extra class for LS4102

Time:

12:30 p.m. - 10:30 p.m.

Venue:

Asima Theatre

Description:

Gravity-Cosmology Workshop

Time:

2 p.m. - 6 p.m.

Venue:

Wadia Theatre

Description:

[Short course Lithosphere 2024] Prof. James Jackson, Prof. Supriyo Mitra, Dr. Tapabrato Sarkar, and Dr. Sanjay Kumar Mandal

Time:

3:30 p.m. - 5 p.m.

Venue:

101, CV Raman

Description:

Special Campaign for Disposal of Pen

Time:

4 p.m. - 6 p.m.

Venue:

110, APC Ray

Description:

MA2104

Time:

6 p.m. - midnight

Venue:

Saha Theatre

Description:

Movie Screening

Time:

6 p.m. - 6 a.m.

Venue:

RN Tagore

Description:

Aspects of Gravity and Cosmology

Time:

7 p.m. - 9 p.m.

Venue:

G09, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 9 p.m.

Venue:

111, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 8 p.m.

Venue:

Wadia Theatre

Description:

[Short course Lithosphere 2024] Prof. James Jackson, Prof. Supriyo Mitra, Dr. Tapabrato Sarkar, and Dr. Sanjay Kumar Mandal

Time:

7 p.m. - 9 p.m.

Venue:

Ramanujan VC

Description:

MA2104

Time:

7 p.m. - 9 p.m.

Venue:

112, APC Ray

Description:

Ek Pahal Classes

Time:

9 p.m. - midnight

Venue:

G02, APC Ray

Description:

Gaming Club

Time:

9 p.m. - midnight

Venue:

Ramanujan VC

Description:

Gaming Club

Time:

6 a.m. - 8 a.m.

Venue:

RN Tagore

Description:

Aspects of Gravity and Cosmology

Time:

8 a.m. - 4 p.m.

Venue:

Asima Theatre

Description:

Gravity-Cosmology Workshop

Time:

8 a.m. - 6 p.m.

Venue:

RN Tagore

Description:

Aspects of Gravity and Cosmology

Time:

9 a.m. - 9 p.m.

Venue:

110, APC Ray

Description:

Lexis 4.0

Time:

9 a.m. - 9 p.m.

Venue:

102, APC Ray

Description:

Lexis 4.0

Time:

9 a.m. - 9 p.m.

Venue:

G02, APC Ray

Description:

Lexis 4.0

Time:

9 a.m. - 9 p.m.

Venue:

108, APC Ray

Description:

Lexis 4.0

Time:

9 a.m. - 7 p.m.

Venue:

G09, APC Ray

Description:

Lexis 4.0

Time:

9 a.m. - 9 p.m.

Venue:

101, APC Ray

Description:

Lexis 4.0

Time:

9 a.m. - 9 p.m.

Venue:

Ramanujan VC

Description:

Lexis 4.0

Time:

9 a.m. - 11 a.m.

Venue:

Bose Theatre

Description:

HU1103

Time:

10 a.m. - 8 p.m.

Venue:

Wadia Theatre

Description:

[Short course Lithosphere 2024] Prof. James Jackson, Prof. Supriyo Mitra, Dr. Tapabrato Sarkar, and Dr. Sanjay Kumar Mandal

Time:

10 a.m. - 1 p.m.

Venue:

112, APC Ray

Description:

[CH4116 Class] BM

Time:

10 a.m. - noon

Venue:

Saha Theatre

Description:

Science Workshop

Time:

11 a.m. - 1 p.m.

Venue:

Bose Theatre

Description:

HU1101

Time:

3 p.m. - 7 p.m.

Venue:

103, APC Ray

Description:

[Discussion meeting of PM Lab] Prasun Mandal (IISER Kolkata)

Time:

6 p.m. - midnight

Venue:

Saha Theatre

Description:

Movie Screening

Time:

7 p.m. - 9 p.m.

Venue:

G09, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 9 p.m.

Venue:

111, APC Ray

Description:

Ek Pahal Classes

Time:

7 p.m. - 9 p.m.

Venue:

112, APC Ray

Description:

Ek Pahal Classes

Time:

9 p.m. - 11 p.m.

Venue:

Bose Theatre

Description:

Lexis 4.0

Time:

9 p.m. - 11 p.m.

Venue:

Wadia Theatre

Description:

Lexis 4.0

Time:

9 p.m. - 11 p.m.

Venue:

G09, APC Ray

Description:

Lexis 4.0

Time:

9 p.m. - 11 p.m.

Venue:

G08, APC Ray

Description:

Lexis 4.0

Time:

9 p.m. - 11 p.m.

Venue:

112, APC Ray

Description:

Lexis 4.0

Time:

9 p.m. - 11 p.m.

Venue:

213, APC Ray

Description:

Lexis 4.0

Time:

9 p.m. - 11 p.m.

Venue:

212, APC Ray

Description:

Lexis 4.0

Time:

9 p.m. - 11 p.m.

Venue:

211, APC Ray

Description:

Lexis 4.0

Time:

9 p.m. - 11 p.m.

Venue:

209, APC Ray

Description:

Lexis 4.0

Time:

9 p.m. - 11 p.m.

Venue:

111, APC Ray

Description:

Lexis 4.0

Time:

9 p.m. - 11 p.m.

Venue:

110, APC Ray

Description:

Lexis 4.0

Time:

9 p.m. - 11 p.m.

Venue:

108, APC Ray

Description:

Lexis 4.0

Time:

9 p.m. - 11 p.m.

Venue:

108, APC Ray

Description:

Lexis 4.0

Time:

9 p.m. - midnight

Venue:

Ramanujan VC

Description:

Gaming Club

Time:

9 p.m. - midnight

Venue:

G02, APC Ray

Description:

Gaming Club

Time:

9 p.m. - 11 p.m.

Venue:

103, APC Ray

Description:

Lexis 4.0

Time:

9 p.m. - 11 p.m.

Venue:

102, APC Ray

Description:

Lexis 4.0

Time:

9 p.m. - 11 p.m.

Venue:

101, APC Ray

Description:

Lexis 4.0