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	<id>https://drorbn.net/api.php?action=feedcontributions&amp;feedformat=atom&amp;user=Mohan+Zhang</id>
	<title>Drorbn - User contributions [en]</title>
	<link rel="self" type="application/atom+xml" href="https://drorbn.net/api.php?action=feedcontributions&amp;feedformat=atom&amp;user=Mohan+Zhang"/>
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	<updated>2026-05-07T01:49:58Z</updated>
	<subtitle>User contributions</subtitle>
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	<entry>
		<id>https://drorbn.net/index.php?title=1617-257/Class_Photo&amp;diff=16157</id>
		<title>1617-257/Class Photo</title>
		<link rel="alternate" type="text/html" href="https://drorbn.net/index.php?title=1617-257/Class_Photo&amp;diff=16157"/>
		<updated>2017-03-08T00:03:49Z</updated>

		<summary type="html">&lt;p&gt;Mohan Zhang: /* Who We Are... */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Our class on September 30, 2016:&lt;br /&gt;
&lt;br /&gt;
[[Image:1617-257-ClassPhoto.jpg|thumb|centre|800px|Class Photo: click to enlarge]]&lt;br /&gt;
{{1617-257/Navigation}}&lt;br /&gt;
&lt;br /&gt;
Please identify yourself in this photo! There are two ways to do that:&lt;br /&gt;
&lt;br /&gt;
* [[Special:Userlogin|Log in]] to this Wiki and edit this page. Put your name, userid, email address and location in the picture in the alphabetical list below.&lt;br /&gt;
* Send [[User:Drorbn|Dror]] an email message with this information.&lt;br /&gt;
&lt;br /&gt;
The first option is more fun but less private.&lt;br /&gt;
&lt;br /&gt;
===Who We Are...===&lt;br /&gt;
&lt;br /&gt;
{| align=center border=1 cellspacing=1&lt;br /&gt;
&lt;br /&gt;
{{Photo Entry|last=Bar-Natan|first=Dror|userid=Drorbn|email=drorbn@ math. toronto. edu|location=facing everybody, as the photographer|comments=Take this entry as a model and leave it first. Otherwise alphabetize by last name. Feel free to leave some fields blank. For better line-breaking, leave a space next to the &amp;quot;@&amp;quot; in email addresses.}}&lt;br /&gt;
&lt;br /&gt;
&amp;lt;!--PLEASE KEEP IN ALPHABETICAL ORDER, BY LAST NAME--&amp;gt;&lt;br /&gt;
&lt;br /&gt;
{{Photo Entry|last=Beach|first=Isabel|userid=Beach|email=isabel. beach@ mail. utoronto. ca|location=first row, third from left, burgundy U of T sweater|comments=Artist, wannabe astronomer, nature enthusiast.}}&lt;br /&gt;
&lt;br /&gt;
{{Photo Entry|last=Divic|first=Stefan|userid=Stefan.divic|email=stefan. divic@ mail. utoronto. ca|location=Right behind the tall dude with the blue/white-striped shirt|comments=Interested in making music, traveling, meeting people!}}&lt;br /&gt;
&lt;br /&gt;
{{Photo Entry|last=Hu|first=Janelle|userid=Janelle|email=janelle.hu@ mail. utoronto. ca|location=third row, third from the right|comments=Joined a dance crew this year.&lt;br /&gt;
Math related: my roommates are 4th year math specialists}}&lt;br /&gt;
&lt;br /&gt;
{{Photo Entry|last=Im|first=Jeffrey|userid=jeffim|email=jim@ math. toronto. edu|location=bottom-right corner|comments=One of two TAs for this class. Student of George Elliott. Interested in C*-algebras/K-theory.}}&lt;br /&gt;
&lt;br /&gt;
{{Photo Entry|last=Khesin|first=Andrey|userid=Andrey Boris Khesin|email=andrey.khesin@gmail.com|location=second to last row, ~5th from the right, awesome black t-shirt|comments=Math and Physics Specialist.&lt;br /&gt;
Student of Prof. Bar-Natan.}}&lt;br /&gt;
&lt;br /&gt;
{{Photo Entry|last=Li|first=Xiaoyang|userid=Witchofagnesi|email=xiaoyang. li@ mail. utoronto. ca|location=fifth row, on the middle-left, head sticking out|comments=Loves classical music and poetry.}}&lt;br /&gt;
&lt;br /&gt;
{{Photo Entry|last=Li|first=Xuechen(Chen)|userid=Lxuechen|email=xuechen. li@ mail. utoronto. ca|location=left end of fourth row, with green shirt|comments=Loves puzzle solving and worshipping.}}&lt;br /&gt;
&lt;br /&gt;
{{Photo Entry|last=Maes|first=Yehuda|userid=Yehuda|email=yehudamaes@ mail. utoronto. ca|location=5th row, sitting in the center in a white shirt|comments=I love log walks on the beach, staring out at the sine waves.}}&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
{{Photo Entry|last=Moore|first=Darren|userid=DarrenMoo|email=da.moore@ mail. utoronto. ca|location=fourth row, standing, white UofT shirt|comments=Wannabe game dev, mathematician, musician, etc.}}&lt;br /&gt;
&lt;br /&gt;
{{Photo Entry|last=McBrien|first=Heather|userid=Heatherheather|email=heather.mcbrien@ mail. utoronto. ca|location=fourth row, standing, leaning back with the really strange facial expression and the blue sweater|comments=My name is Heather but some people (most) call me Kate.}}&lt;br /&gt;
&lt;br /&gt;
{{Photo Entry|last=Morton-Ferguson|first=Calder|userid=calder.oakes|email=calder. morton. ferguson@ mail. utoronto. ca|location=4th-ish row, standing and smiling with my arms around Darren and Tanny.|comments= It ain&#039;t got that swing if it don&#039;t mean a thing. Proof of the converse is left as an exercise.}}&lt;br /&gt;
&lt;br /&gt;
{{Photo Entry|last=Moturu|first=Abhishek|userid=Abhi.saim|email=abhi.saim@ gmail.com|location=first row, third from the right, white pants|comments=Two loves: math and chicken.}}&lt;br /&gt;
&lt;br /&gt;
{{Photo Entry|last=Stanoulis|first=Thomas|userid=Tstanoulis|email=thomas.stanoulis @ mail.utoronto.ca |location=left side, third row, second person, dark brown-green-ish collared shirt|comments=Mostly thinking about the next meal.}}&lt;br /&gt;
&lt;br /&gt;
{{Photo Entry|last=Wang|first=Yixuan|userid=Wangy306|email=yixuansara.wang@ mail. utoronto. ca|location=fourth row, in the middle, with red hoddy|comments=Hope to have a kitty after graduation.}}&lt;br /&gt;
&lt;br /&gt;
{{Photo Entry|last=Xu|first=Xinyi|userid=Maggie|email=xinyi. xu97@ gmail. com|location=fourth row, first girl from right,with red glasses|comments=Interested in modern Origami.}}&lt;br /&gt;
&lt;br /&gt;
{{Photo Entry|last=Zhang|first=Mohan|userid=Mohan Zhang|email=morgan.zhang@ mail. utoronto. ca|location=Second line, 3rd guy in gray shirt count from the right side |comments=CS&amp;amp;MAT spe, love meeting people!}}&lt;br /&gt;
&amp;lt;!--PLEASE EEP IN ALPHABETICAL ORDER, BY LAST NAME--&amp;gt;&lt;br /&gt;
|}&lt;/div&gt;</summary>
		<author><name>Mohan Zhang</name></author>
	</entry>
	<entry>
		<id>https://drorbn.net/index.php?title=1617-257/Classnotes_for_Friday_September_16&amp;diff=15461</id>
		<title>1617-257/Classnotes for Friday September 16</title>
		<link rel="alternate" type="text/html" href="https://drorbn.net/index.php?title=1617-257/Classnotes_for_Friday_September_16&amp;diff=15461"/>
		<updated>2016-10-07T16:47:38Z</updated>

		<summary type="html">&lt;p&gt;Mohan Zhang: /* Extra Problem */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{1617-257/Navigation}}&lt;br /&gt;
&lt;br /&gt;
{{1617-257:Dror/Students Divider}}&lt;br /&gt;
&lt;br /&gt;
== Handwritten Lecture Notes in PDF ==&lt;br /&gt;
[[Media:1617-257(lecture3).PDF|MAT257 - Lecture3 (Sep 16)]]&lt;br /&gt;
== Extra Problem ==&lt;br /&gt;
&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:1617-257lec2quesanswer.pdf&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;/div&gt;</summary>
		<author><name>Mohan Zhang</name></author>
	</entry>
	<entry>
		<id>https://drorbn.net/index.php?title=1617-257/Classnotes_for_Friday_September_16&amp;diff=15460</id>
		<title>1617-257/Classnotes for Friday September 16</title>
		<link rel="alternate" type="text/html" href="https://drorbn.net/index.php?title=1617-257/Classnotes_for_Friday_September_16&amp;diff=15460"/>
		<updated>2016-10-07T16:46:09Z</updated>

		<summary type="html">&lt;p&gt;Mohan Zhang: /* Extra Problem */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{1617-257/Navigation}}&lt;br /&gt;
&lt;br /&gt;
{{1617-257:Dror/Students Divider}}&lt;br /&gt;
&lt;br /&gt;
== Handwritten Lecture Notes in PDF ==&lt;br /&gt;
[[Media:1617-257(lecture3).PDF|MAT257 - Lecture3 (Sep 16)]]&lt;br /&gt;
== Extra Problem ==&lt;br /&gt;
&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:http://drorbn.net/images/8/88/1617-257lec2quesanswer.pdf&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;/div&gt;</summary>
		<author><name>Mohan Zhang</name></author>
	</entry>
	<entry>
		<id>https://drorbn.net/index.php?title=1617-257/Classnotes_for_Friday_September_16&amp;diff=15459</id>
		<title>1617-257/Classnotes for Friday September 16</title>
		<link rel="alternate" type="text/html" href="https://drorbn.net/index.php?title=1617-257/Classnotes_for_Friday_September_16&amp;diff=15459"/>
		<updated>2016-10-07T16:45:36Z</updated>

		<summary type="html">&lt;p&gt;Mohan Zhang: /* Handwritten Lecture Notes in PDF */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{1617-257/Navigation}}&lt;br /&gt;
&lt;br /&gt;
{{1617-257:Dror/Students Divider}}&lt;br /&gt;
&lt;br /&gt;
== Handwritten Lecture Notes in PDF ==&lt;br /&gt;
[[Media:1617-257(lecture3).PDF|MAT257 - Lecture3 (Sep 16)]]&lt;br /&gt;
== Extra Problem ==&lt;br /&gt;
&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:1617-257lec2quesanswer.pdf&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;/div&gt;</summary>
		<author><name>Mohan Zhang</name></author>
	</entry>
	<entry>
		<id>https://drorbn.net/index.php?title=File:1617-257lec2quesanswer.pdf&amp;diff=15458</id>
		<title>File:1617-257lec2quesanswer.pdf</title>
		<link rel="alternate" type="text/html" href="https://drorbn.net/index.php?title=File:1617-257lec2quesanswer.pdf&amp;diff=15458"/>
		<updated>2016-10-07T16:43:10Z</updated>

		<summary type="html">&lt;p&gt;Mohan Zhang: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;&lt;/div&gt;</summary>
		<author><name>Mohan Zhang</name></author>
	</entry>
	<entry>
		<id>https://drorbn.net/index.php?title=1617-257/Navigation&amp;diff=15321</id>
		<title>1617-257/Navigation</title>
		<link rel="alternate" type="text/html" href="https://drorbn.net/index.php?title=1617-257/Navigation&amp;diff=15321"/>
		<updated>2016-09-19T20:53:07Z</updated>

		<summary type="html">&lt;p&gt;Mohan Zhang: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;&amp;lt;noinclude&amp;gt;Back to [[1617-257]].&amp;lt;br/&amp;gt;&amp;lt;/noinclude&amp;gt;&lt;br /&gt;
{| border=&amp;quot;1px&amp;quot; cellpadding=&amp;quot;1&amp;quot; cellspacing=&amp;quot;0&amp;quot; width=&amp;quot;100%&amp;quot; style=&amp;quot;font-size: small; align: left&amp;quot;&lt;br /&gt;
|- align=center style=&amp;quot;color: red;&amp;quot;&lt;br /&gt;
|colspan=3|&#039;&#039;&#039;Welcome to Math 257&#039;&#039;&#039;&lt;br /&gt;
&lt;br /&gt;
&amp;lt;span style=&amp;quot;font-size: 250%&amp;quot;&amp;gt;Class Moved!&amp;lt;/span&amp;gt;&lt;br /&gt;
&lt;br /&gt;
As of now yet only until the end of this semester, we meet at [http://osm.utoronto.ca/class_spec/f?p=210:1:918950691886201::NO::: MC 254]!&lt;br /&gt;
|- align=left&lt;br /&gt;
!#&lt;br /&gt;
!Week of...&lt;br /&gt;
!Notes and Links&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|1&lt;br /&gt;
|Sep 12&lt;br /&gt;
|[[1617-257/About This Class|About This Class]]; Day 1 Handout ({{pensieve link|Classes/1617-257-AnalysisII/160912/Day1.pdf|pdf}}, {{pensieve link|Classes/1617-257-AnalysisII/160912/Day1.html|html}}); [[1617-257/Classnotes for Monday September 12|Monday]]; Day 2 Handout ({{pensieve link|Classes/1617-257-AnalysisII/160914/Day2.pdf|pdf}}, {{pensieve link|Classes/1617-257-AnalysisII/160914/Day2.html|html}}); [[Media:1617-257_Notes_First week.pdf|First Week Notes]]; [[Media:Lecture_03.pdf|Lecture 3 Notes]]; [[Media:1617-256-Lecture_02_extra_problem.pdf|Lecture 2 Extra Problem]] ; [[Media:Mat257lec2answer.pdf|Lecture 3 Extra Problem]];.&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|2&lt;br /&gt;
|Sep 19&lt;br /&gt;
|[[1617-257/Homework Assignment 1|HW1]].&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|3&lt;br /&gt;
|Sep 26&lt;br /&gt;
|[[1617-257/Homework Assignment 2|HW2]].&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|4&lt;br /&gt;
|Oct 3&lt;br /&gt;
|[[1617-257/Homework Assignment 3|HW3]].&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|5&lt;br /&gt;
|Oct 10&lt;br /&gt;
|Monday is Thanksgiving, no class; [[1617-257/Homework Assignment 4|HW4]].&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|6&lt;br /&gt;
|Oct 17&lt;br /&gt;
|[[1617-257/Homework Assignment 5|HW5]].&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|7&lt;br /&gt;
|Oct 24&lt;br /&gt;
|&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|8&lt;br /&gt;
|Oct 31&lt;br /&gt;
|Monday is last day to switch to MAT 235; Term test 1 on Tuesday at 5-7PM; [[1617-257/Homework Assignment 6|HW6]].&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|9&lt;br /&gt;
|Nov 7&lt;br /&gt;
|Monday is last day to switch to MAT 237; Monday-Tuesday is UofT Fall Break; [[1617-257/Homework Assignment 7|HW7]].&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|10&lt;br /&gt;
|Nov 14&lt;br /&gt;
|[[1617-257/Homework Assignment 8|HW8]].&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|11&lt;br /&gt;
|Nov 21&lt;br /&gt;
|[[1617-257/Homework Assignment 9|HW9]].&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|12&lt;br /&gt;
|Nov 28&lt;br /&gt;
|[[1617-257/Homework Assignment 10|HW10]].&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|13&lt;br /&gt;
|Dec 5&lt;br /&gt;
|Semester ends on Wednesday - no class Friday.&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|B&lt;br /&gt;
|Dec 12,19,26, Jan 2&lt;br /&gt;
|No classes: other classes&#039; finals, winter break.&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|14&lt;br /&gt;
|Jan 9&lt;br /&gt;
|&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|15&lt;br /&gt;
|Jan 16&lt;br /&gt;
|Term test 2 on Tuesday at 5-7PM; [[1617-257/Homework Assignment 11|HW11]].&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|16&lt;br /&gt;
|Jan 23&lt;br /&gt;
|[[1617-257/Homework Assignment 12|HW12]].&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|17&lt;br /&gt;
|Jan 30&lt;br /&gt;
|[[1617-257/Homework Assignment 13|HW13]].&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|18&lt;br /&gt;
|Feb 6&lt;br /&gt;
|[[1617-257/Homework Assignment 14|HW14]]; UofT examination table posted on Friday.&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|19&lt;br /&gt;
|Feb 13&lt;br /&gt;
|[[1617-257/Homework Assignment 15|HW15]].&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|R&lt;br /&gt;
|Feb 20&lt;br /&gt;
|Reading week - no classes.&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|20&lt;br /&gt;
|Feb 27&lt;br /&gt;
|[[1617-257/Homework Assignment 16|HW16]].&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|21&lt;br /&gt;
|Mar 6&lt;br /&gt;
|&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|22&lt;br /&gt;
|Mar 13&lt;br /&gt;
|Term test 3 on Tuesday at 5-7PM; [[1617-257/Homework Assignment 17|HW17]].&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|23&lt;br /&gt;
|Mar 20&lt;br /&gt;
|[[1617-257/Homework Assignment 18|HW18]].&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|24&lt;br /&gt;
|Mar 27&lt;br /&gt;
|[[1617-257/Homework Assignment 19|HW19]].&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|25&lt;br /&gt;
|Apr 3&lt;br /&gt;
|Semester ends on Wednesday - no class Friday.&lt;br /&gt;
|- align=left&lt;br /&gt;
|align=center|F&lt;br /&gt;
|Apr10-28&lt;br /&gt;
|[[1617-257/The Final Exam|The Final Exam]].&lt;br /&gt;
|- align=left&lt;br /&gt;
|colspan=3 align=center|[[1617-257/Register of Good Deeds|Register of Good Deeds]]&lt;br /&gt;
|- align=left&lt;br /&gt;
|colspan=3 align=center|[[Image:1617-257-ClassPhoto.jpg|310px|Class Photo]]&amp;lt;br/&amp;gt;[[1617-257/Class Photo|Add your name / see who&#039;s in!]]&lt;br /&gt;
|- align=left&lt;br /&gt;
|colspan=3 align=center|&amp;lt;math&amp;gt;\int_M d\omega=\int_{\partial M}\omega&amp;lt;/math&amp;gt;&lt;br /&gt;
|}&lt;/div&gt;</summary>
		<author><name>Mohan Zhang</name></author>
	</entry>
</feed>