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MATH 31A · Lec 2

Differential and Integral Calculus

Fall 2026Keranen, J.P.4 units

Seats, time, final and grades

Seats

Waitlist, 14 of 18 places taken.

210 of 210 enrolled, lecture and all discussions summed.

Meets

MWF 10:00am-10:50am

Lecture only. You also attend a discussion, listed below.

Final

Tue 8 Dec, 6:30pm to 9:30pm

One exam for the whole class, Los Angeles time.

Read 4 days ago.

Grades

3.16
predicted, this instructor · 313 grades

313 letter grades, Keranen, J.P..

Read 2 hours ago. The latest refresh is overdue. Seats and instructors may have changed since. Check the registrar before enrolling.

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Before you can enroll

Tell dibs what you have already taken and this line will say which of these you have. Your list.

From the registrar limited early, then open

Information on the Mathematics Diagnostic Test and Advanced Placement (AP) credit is available at https://uclamathugrad.zendesk.com/ . Seats are held for entering students who enroll through New Student Orientation sessions beginning July 2, 2026. New student restrictions will be lifted on September 15, 2026 at 8 a.m. Enrollment is contingent on taking and passing the Mathematics Diagnostic Test. There will be two MANDATORY midterm examinations from 6 to 7:50 p.m. on the following Wednesdays: October 21 and November 18, 2026.

The limit stands until 15 September, and lifts then. dibs still counts this class as one you can take, but not yet.

Restrictions read 4 days ago. dibs re-reads these slowly because they rarely change; watch the section and it moves to every 6 hours.

Discussions

You enroll in the discussion, not the lecture, so the seat figure above is the sum across all of them and can read open while every discussion you could actually join is full.

6 discussions, none open. The way in is the lecture's waitlist, at 14 of 18.

No discussion is open. 3 discussions have a waitlist with room. A place on one is not a seat: it is a queue the department may or may not clear.
  • Dis 2A

    T 10:00am-10:50am

    Han, Z.

    Closed.

  • Dis 2B

    R 10:00am-10:50am

    Han, Z.

    Closed.

  • Dis 2C

    T 10:00am-10:50am

    Slonim, Z.G.

    Closed.

  • Dis 2D

    R 10:00am-10:50am

    Slonim, Z.G.

    Waitlist, 2 of 3 places taken.

  • Dis 2E

    T 10:00am-10:50am

    Kim, A.

    Waitlist, 2 of 3 places taken.

  • Dis 2F

    R 10:00am-10:50am

    Kim, A.

    Waitlist, 1 of 3 places taken.

When it meets

Mon
Tue
Wed
Thu
Fri
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm

Meets: MWF 10:00am-10:50am

Mathematical Sciences 4000A

Grades

3.16
predicted, this instructor · 313 grades

Of the 16 other people in the grade record for MATH 31A, the 2 with the most grades: GANNON, THOMAS ANTHONY at 3.50 over 636 grades and WU, JEREMY SHEUNG HIM at 3.06 over 478 grades.

A range
55%
P/NP
<1%
D/F/W
9.3%

Full grade history for MATH 31A

What students say

dibs measures outcomes: grades, seats, how fast it fills. For what the class is actually like to sit in, BruinWalk has the reviews.

Workload, light. 3.9 of 5 for Jukka Keranen, where 5 is lightest. Read 30 days ago.

dibs has read this course’s reviews and none of them say what kind of work it sets, so dibs has nothing to show rather than a guess. Read from 592 reviews 26 days ago. That is the reviewers being silent, and not a course that sets no work.

MATH 31A reviews for Jukka Keranen Reviews for all professors of MATH 31A

Will it still be here

high risk chance of closing before your enrollment pass.

Final enrollment per term from four years of grade data. Summer excluded: different population, different pass structure.

  • 20221F
  • 28222W
  • 21522F
  • 28523W
  • 18723S
  • 19223F
  • 17624W
  • 18824F
  • 19325W
  • 18625F
Enrollment by term: 21F 202, 22W 282, 22F 215, 23W 285, 23S 187, 23F 192, 24W 176, 24F 188, 25W 193, 25F 186

Peak 285 · most recent 25F at 186

Seats over time

Nothing read since 1 Oct, 2 hours ago. Over about 2 months before that, filled by 72.

2 times reopened
210 of 210 · no seats left in its discussions
17 Aug 15:079 Sep 06:341 Oct 22:02 · 2 hours ago
dibs read 168 of the 698 hours its hourly record covers, 24%, and did not look in 530. dibs had no hourly record before 2 Sep, which is the other 390 of 1088 plotted.210 of 210 enrolled at the newest reading, 2 hours ago, and no seats left in its discussions. Seats from 17 Aug 15:07 to 1 Oct 22:02, 138 to 210. dibs read 168 of the 698 hours its hourly record here covers, 24%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 530 hours dibs was keeping a record and did not reach this section. Nothing before 2 September at 21:00, where this section's record starts, has a read either way, which is 390 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

A dot is a reading where something moved: the seat count, the status, or the waitlist. Flat between dots joins recorded counts; changes between reads may be missed. The line starts when dibs first saw this section rather than reaching back before it existed. The last one is the last time dibs read this section, moved or not, and that was 2 hours ago. It is where the line stops, not where the count is now.

Show the readings (43)
Recorded Enrolled Capacity Status Waitlist Hours read
1 Oct 22:02 210 210 waitlist 14 of 18 7 of 23
1 Oct 00:02 210 210 waitlist 14 of 18 3 of 8
30 Sep 17:02 210 210 waitlist 13 of 18 5 of 16
30 Sep 02:02 210 210 waitlist 11 of 18 2 of 5
29 Sep 22:32 210 210 waitlist 12 of 18 7 of 22
29 Sep 01:32 210 210 waitlist 11 of 18 3 of 8
28 Sep 18:32 210 210 waitlist 10 of 18 6 of 18
28 Sep 01:02 210 210 waitlist 9 of 18 14 of 47
26 Sep 03:02 210 210 waitlist 8 of 18 3 of 8
25 Sep 20:02 210 210 waitlist 9 of 18 3 of 8
25 Sep 13:02 210 210 waitlist 8 of 18 2 of 5
25 Sep 09:32 210 210 waitlist 9 of 18 9 of 29
24 Sep 05:22 210 210 waitlist 8 of 18 5 of 16
23 Sep 14:42 210 210 waitlist 9 of 18 12 of 40
21 Sep 23:22 210 210 waitlist 10 of 18 2 of 5
21 Sep 19:52 209 210 open 10 of 18 2 of 4
21 Sep 16:22 210 210 waitlist 10 of 18 2 of 5
21 Sep 12:52 209 210 open 10 of 18 24 of 81
18 Sep 04:32 210 210 waitlist 11 of 18 10 of 34
16 Sep 19:02 210 210 waitlist 12 of 18 7 of 24
15 Sep 20:52 210 210 waitlist 15 of 18 2 of 5
15 Sep 16:12 210 210 waitlist 10 of 18 2 of 5
15 Sep 12:42 210 210 waitlist 6 of 18 25 of 84
12 Sep 01:22 202 210 open - 2 of 3
11 Sep 23:02 200 210 open - 3 of 6
11 Sep 18:40 202 210 open - 4 of 23
10 Sep 20:40 187 210 open - 4 of 23
9 Sep 22:40 188 196 open - 5 of 29
8 Sep 18:40 177 196 open - 3 of 16
8 Sep 03:40 177 182 open - 7 of 70
5 Sep 06:40 176 182 open - 8 of 37
3 Sep 18:40 164 182 open - 6 of 211, 189 no hourly record
26 Aug 00:40 165 169 open - no hourly record
25 Aug 23:40 150 169 open - no hourly record
25 Aug 22:40 165 169 open - no hourly record
25 Aug 21:40 150 169 open - no hourly record
25 Aug 20:40 165 169 open - no hourly record
24 Aug 15:41 150 169 open - no hourly record
21 Aug 00:40 150 156 open - no hourly record
20 Aug 17:40 151 156 open - no hourly record
19 Aug 21:40 139 156 open - no hourly record
19 Aug 01:40 139 143 open - no hourly record
17 Aug 15:07 138 143 open - -
How readings and alerts work

A reading and an hourly record are different things, and most charts here hold more of the second missing than present. dibs has taken readings of a section since long before it began keeping an hour-by-hour log of when it looked, so the empty stretches are dibs saying it was not keeping that log yet, not that it looked and found nothing. That is the age of the record and not a fault.

Seat counts show the last successful read, not live availability. Refreshes can be delayed by request limits or upstream interruptions. Watched sections receive priority, but an hourly update for every section is not guaranteed.

The registrar can change a seat count between our checks. Alerts depend on dibs detecting an opening and completing delivery; a quiet watch does not prove that no seat opened. Check the registrar before enrolling.

Class chat

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