Skip to content
dibs
Menu
Fall 2026 Change term ▾
Spring 2027 Winter 2027 Fall 2026 Summer Session C 2026 Summer Session A 2026 Spring 2026 Winter 2026 Fall 2025
Sign in

MATH 131A · Lec 1

Analysis

Fall 2026Xu, P.4 units

Seats, time, final and grades

Seats

Waitlist, 11 of 12 places taken.

160 of 160 enrolled, lecture and all discussions summed.

Meets

MWF 12:00pm-12:50pm

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

Final

Thu 10 Dec, 3:00pm to 6:00pm

One exam for the whole class, Los Angeles time.

Read 35 hours ago.

Grades

2.80
predicted, this instructor · 217 grades

217 letter grades, Xu, P..

Read 4 hours ago. The latest refresh is overdue. Seats and instructors may have changed since. Check the registrar before enrolling.

Join the waitlist on the registrar (opens in a new tab) Sign in to watch for an opening

Watching is the one thing here that needs an account, because an alert needs somewhere to go. Everything else on this page works signed out.

Put this class on a board

A board is one quarter you are drafting, so it needs an account to live in. Signing in brings you straight back to this page, with this class still in front of you.

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

Information on the Mathematics Diagnostic Test and Advanced Placement (AP) credit is available at https://uclamathugrad.zendesk.com/ .

Restrictions read 35 hours ago.

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.

4 discussions, none open. The way in is the lecture's waitlist, at 11 of 12.

No discussion is open. 1 discussion has a waitlist with room. A place on one is not a seat: it is a queue the department may or may not clear.
  • Dis 1A

    T 12:00pm-12:50pm

    Moffatt, J.

    Waitlist, 2 of 3 places taken.

  • Dis 1B

    R 12:00pm-12:50pm

    Murri, J.W.

    Closed.

  • Dis 1C

    T 1:00pm-1:50pm

    Tu, Z.T.

    Closed.

  • Dis 1D

    R 1:00pm-1:50pm

    Kalarickal, J.

    Closed.

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 12:00pm-12:50pm

Physics and Astronomy Building 1425

Grades

2.80
predicted, this instructor · 217 grades

Of the 29 other people in the grade record for MATH 131A, the 2 with the most grades: YANEZ ETCHEBERRY, JOSE at 2.79 over 150 grades and DING, CHANGYING at 3.02 over 150 grades.

A range
29%
P/NP
1%
D/F/W
9.2%

Full grade history for MATH 131A

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, very light. 4.2 of 5 for Peter Xu, 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 292 reviews 26 days ago. That is the reviewers being silent, and not a course that sets no work.

MATH 131A reviews for Peter Xu Reviews for all professors of MATH 131A

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.

  • 3321F
  • 3622W
  • 3422S
  • 3922F
  • 3523W
  • 3223S
  • 3523F
  • 3424W
  • 3824S
  • 3424F
  • 4025W
  • 3325S
  • 3625F
Enrollment by term: 21F 33, 22W 36, 22S 34, 22F 39, 23W 35, 23S 32, 23F 35, 24W 34, 24S 38, 24F 34, 25W 40, 25S 33, 25F 36

Peak 40 · most recent 25F at 36

Seats over time

Nothing read since 1 Oct, 4 hours ago. Over about 2 months before that, same seat count, but the status went closed to waitlist, the waitlist moved and came back, and the seat count moved and came back.

2 times reopened
160 of 160 · no seats left in its discussions
17 Aug 15:079 Sep 06:341 Oct 22:02 · 4 hours ago
dibs read 168 of the 696 hours its hourly record covers, 24%, and did not look in 528. dibs had no hourly record before 2 Sep, which is the other 392 of 1088 plotted.160 of 160 enrolled at the newest reading, 4 hours ago, and no seats left in its discussions. Seats from 17 Aug 15:07 to 1 Oct 22:02, 160 to 160. dibs read 168 of the 696 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 528 hours dibs was keeping a record and did not reach this section. Nothing before 2 September at 23:00, where this section's record starts, has a read either way, which is 392 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 4 hours ago. It is where the line stops, not where the count is now.

Show the readings (31)
Recorded Enrolled Capacity Status Waitlist Hours read
1 Oct 22:02 160 160 waitlist 11 of 12 1 of 1
1 Oct 22:02 160 160 waitlist 11 of 12 6 of 19
1 Oct 04:32 160 160 closed 12 of 12 2 of 5
1 Oct 00:02 160 160 waitlist 11 of 12 6 of 19
30 Sep 06:32 160 160 closed 12 of 12 3 of 9
29 Sep 22:32 160 160 waitlist 11 of 12 32 of 110
25 Sep 09:32 160 160 closed 12 of 12 3 of 8
25 Sep 02:22 160 160 waitlist 11 of 12 2 of 5
24 Sep 22:52 160 160 closed 12 of 12 2 of 4
24 Sep 19:22 160 160 waitlist 11 of 12 9 of 30
23 Sep 14:42 160 160 closed 12 of 12 2 of 4
23 Sep 11:12 160 160 waitlist 10 of 12 3 of 8
23 Sep 04:32 160 160 waitlist 11 of 12 2 of 5
23 Sep 00:52 160 160 closed 12 of 12 2 of 4
22 Sep 21:22 160 160 waitlist 11 of 12 21 of 70
20 Sep 00:52 160 160 closed 12 of 12 3 of 8
19 Sep 17:52 160 160 waitlist 11 of 12 10 of 32
18 Sep 10:22 160 160 closed 12 of 12 4 of 13
17 Sep 22:52 160 160 waitlist 11 of 12 8 of 26
16 Sep 21:22 160 160 closed 12 of 12 2 of 5
16 Sep 17:52 160 160 waitlist 11 of 12 5 of 14
16 Sep 04:12 160 160 closed 12 of 12 2 of 5
16 Sep 00:22 160 160 waitlist 11 of 12 2 of 5
15 Sep 20:52 160 160 closed 12 of 12 2 of 5
15 Sep 16:12 160 160 waitlist 11 of 12 2 of 5
15 Sep 12:42 160 160 waitlist 7 of 12 57 of 371, 69 no hourly record
31 Aug 02:40 160 160 closed - no hourly record
30 Aug 22:40 159 160 open - no hourly record
30 Aug 21:40 160 160 closed - no hourly record
30 Aug 01:40 159 160 open - no hourly record
17 Aug 15:07 160 160 closed - -
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

Nobody on dibs watches this class or has it on a plan yet. Nobody has posted yet.

Sign in to start the conversation

Reading a room needs no account. Posting does, and it is free.