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matthewconroy.mathstodon.xyz.ap.brid.gy
Matthew Conroy
@matthewconroy.mathstodon.xyz.ap.brid.gy
43 followers 3 following 320 posts
I'm a mathematics teaching professor in Seattle. I taught discrete modeling for a bunch of years, but I'll be teaching intro to proofs and real analysis in the […]

🌉 bridged from ⁂ https://mathstodon.xyz/@matthewconroy, follow @ap.brid.gy to interact
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matthewconroy.mathstodon.xyz.ap.brid.gy
Two nights of dreams involving my wallet. In one, I couldn't get it out of my back pocket: my hand/arm was not functioning correctly (some kind of neurological problem). In the one last night, someone pickpocketed it but handed it back to me when they couldn't figure out how to get any cash out […]
Original post on mathstodon.xyz
mathstodon.xyz
February 16, 2026 at 8:42 PM
matthewconroy.mathstodon.xyz.ap.brid.gy
Easy ride down to the waterfront again after a rough week.

#seabikes #cycling
A green-yellow bicycle leaning against a fence. It the background is Puget Sound with a large ship nearby. A bit of sky with puffy clouds shows at the top of the picture.
February 15, 2026 at 12:46 AM
matthewconroy.mathstodon.xyz.ap.brid.gy
It continues to amaze me that I have this thing in my chest. It's a stent keeping my aorta nice and open; I have congenital heart defects, and the stent is helping out with that. (X-ray from Monday: it's been a week...).
A chest xray. The curious feature is a large stent in the descending aorta. It appears as a cylindrical-ish metal mesh.
February 12, 2026 at 11:07 PM
matthewconroy.mathstodon.xyz.ap.brid.gy
I may be just a wanna-be randonneur, but I like my kit.

#randonneur #sir #cycling
An old man in the pink cycling kit of the Seattle Randonneurs in front of a retaining wall against which leans a yellow-green bicycle.
February 5, 2026 at 1:37 AM
matthewconroy.mathstodon.xyz.ap.brid.gy
Yesterday, near the back of the bus, just me and this one guy sitting behind me, and this guy was going on and on talking to himself or someone imagined or no one about how if everyone would use Irish. Spring. Soap. (he said it just like that, slowly, a separation between each word like he was […]
Original post on mathstodon.xyz
mathstodon.xyz
February 4, 2026 at 8:27 PM
matthewconroy.mathstodon.xyz.ap.brid.gy
Unintentional transfer of text to some concrete.

#photography
Closeup of a piece of structural concreate with various marks. Text has transferred to the concrete from a posted, apparently two-sided, flyer.
February 2, 2026 at 12:19 AM
matthewconroy.mathstodon.xyz.ap.brid.gy
In a dream, a cute person said to me, "If I didn't have a cold, I'd kiss you." That was nice.
February 1, 2026 at 8:59 PM
matthewconroy.mathstodon.xyz.ap.brid.gy
Another field recording on the escalators I take on the way to my office. This time, a practicing trombonist and, I imagine, some practicing crows. https://soundcloud.com/matthew-m-conroy/escalator-and-trombone-jan-2026

#sound #fieldrecording #escalator #trombone
escalator and trombone (Jan 2026)
Field recording on escalators in a parking garage with trombone, crows, and other noises.
soundcloud.com
January 31, 2026 at 3:34 AM
matthewconroy.mathstodon.xyz.ap.brid.gy
Today's field recording. Once again in the parking garage that I walk through on my way to my office. This time, someone is practicing their tuba. https://soundcloud.com/matthew-m-conroy/field-recording-escalator-with-tuba

#fieldrecording #tuba #sound
field recording: escalator with tuba
A field recording made while taking a few escalators in a parking garage. In the first bit, one can hear someone practicing their tuba playing.
soundcloud.com
January 29, 2026 at 4:26 AM
matthewconroy.mathstodon.xyz.ap.brid.gy
Feeling very sad today.
January 28, 2026 at 7:58 PM
matthewconroy.mathstodon.xyz.ap.brid.gy
I walked 10k today and saw some Seattle frost.

#photography
A close-up of frost on a post showing myriad rectangular prism-like crystals.
January 26, 2026 at 4:56 AM
matthewconroy.mathstodon.xyz.ap.brid.gy
First ride to the waterfront in a while today.

#bike #cycling
A yellow-green bicycle leaning against a fence. In the background is Puget Sound and sky. A large tanker or cargo ship is not too far out into the sound. The scene is sunny, with a sky streaked with clouds.
January 20, 2026 at 11:43 PM
matthewconroy.mathstodon.xyz.ap.brid.gy
Bike parts replacement time! My old rear derailleur guide pulley on the right and its brand-new replacement on the left (with the cute little twist-tie to hold its guts in). Sixteen years of wear, but it was shifting fine... Still, it's nice to replace worn […]

[Original post on mathstodon.xyz]
Two rear derailleur guide pulleys. The one on the left is brand-new, and the one on the right is sixteen years old. The left one shows squared-off teeth. The right one has pointy teeth due to wear. They are lying on a piece of graph paper.
January 5, 2026 at 1:27 AM
matthewconroy.mathstodon.xyz.ap.brid.gy
My top-rated (favorite-ish) books read this year. I'd love to see your list!

Orlando, Virginia Woolf
Mister Skylight, Ed Skoog
The Lagoon, Janet Frame
The Reservoir: Stories and Sketches, Janet Frame
The Secret Garden, Frances Hodgson Burnett
Cat, Theodore Isaac Rubin
Kenneth Koch, Selected […]
Original post on mathstodon.xyz
mathstodon.xyz
December 31, 2025 at 9:13 PM
matthewconroy.mathstodon.xyz.ap.brid.gy
My annual contribution to nonsense data visualization: km ridden plus book pages read, by year.

#nonsense #datavisualization #reading
A plot of my km ridden plus pages read versus year. The years range from 2010 to 2025. The y values are all in the range 9000-21000. Each data point is a black filled circle and there are black line segments connecting the data points chronologically.
December 31, 2025 at 8:52 PM
matthewconroy.mathstodon.xyz.ap.brid.gy
Scrooge was better than his word.
December 25, 2025 at 8:59 AM
matthewconroy.mathstodon.xyz.ap.brid.gy
Merry Christmas! In keeping with the season, I present to you my latest chapbook, All the Words of the Reindeer. It is all the words I found (2078, it turns out) I could create with one letter from each of the reindeer names in Twas The Night Before Christmas […]

[Original post on mathstodon.xyz]
A close shot of the front cover of a chapbook. Black text on white paper. One line of text is "All the Words of the Reindeer" and the other line is "Matthew M. Conroy". A thumb is visible in the lower left, part of the hand that is holding the chapbook up to be photographed. A closeup photograph of black text on white paper. The paper is curved; the page is bent away from the camera to left and right. Much of the text is blurry. The text is in groups, each of which is a permutation of the names Dasher, Dancer, Prancer, Vixen, Comet, Cupid, Donner, Blitzen arranged in a vertical stack. The names are shifted left and right so that a set of letters, one from each name, align and spell a word. There are about 20 such stacks on the page. The one in the center is danCer, dOnner, coMet, Blitzen, vIxen, praNcer, dashEr, cupiD, spelling the word COMBINED.
December 25, 2025 at 12:59 AM
matthewconroy.mathstodon.xyz.ap.brid.gy
The number of letters in this sentence, with which I wish you a Merry Christmas, raised to the sixth power, is one hundred twenty two trillion nine hundred seventy eight billion four hundred ninety six million two hundred forty seven thousand four hundred and eighty nine.

#christmas #wordplay
December 24, 2025 at 4:12 AM
matthewconroy.mathstodon.xyz.ap.brid.gy
[unclothed skin, scar, surgery mention]

In December, 1975, at the age of nine, I had one of the most significant experiences of my life: I spent a week at Boston Children's Hospital to have one of my congenital heart defects, a coarctation of the aorta […]

[Original post on mathstodon.xyz]
A black-and-white image of the upper left back torso of a main with a scar that runs from low on his left side to high on his back, ending just a little to the left of his spine. The torso is lit from above.
December 22, 2025 at 11:39 PM
matthewconroy.mathstodon.xyz.ap.brid.gy
A nice Disquite Junto project to take my mind off my head cold. A track made using a 1920 recording of "Nine" by Hans Kindler. Lots of layers, mixed and filtered with Csound. Not my usual kind of sound, but I really like it! Cheers! https://soundcloud.com/matthew-m-conroy/nina-disquiet0729 […]
Original post on mathstodon.xyz
mathstodon.xyz
December 21, 2025 at 1:17 AM
matthewconroy.mathstodon.xyz.ap.brid.gy
I wish you all very happy holidays and would like to let you know that the product of the number of y's and the number of e's in this sentence equals the total number of letters in this sentence, one hundred seventy five!
December 20, 2025 at 11:07 PM
matthewconroy.mathstodon.xyz.ap.brid.gy
Another animated of a Library of Congress stereograph.

#photography #stereograph #train
December 15, 2025 at 12:59 AM
matthewconroy.mathstodon.xyz.ap.brid.gy
Another animated Library of Congress stereograph. "Around the Dead Sea. Man floating with book and umbrella in hands" (1900-1920?).

#animation #animatedgif #photography #stereograph
December 8, 2025 at 7:24 AM
matthewconroy.mathstodon.xyz.ap.brid.gy
Another animated Library of Congress stereograph. "Skating on the lake, Central Park, New York, N.Y., U.S.A.". Circa 1902.

When I was in college, I skated on Lake Winnipesaukee once. There were only four of us on the ice. We'd cleared off a section of the […]

[Original post on mathstodon.xyz]
December 8, 2025 at 6:36 AM
matthewconroy.mathstodon.xyz.ap.brid.gy
Another animated Library of Congress stereograph. "Checking wounded French before removal to base hospital. Northern France. European war". 1917.

#stereograph #animation #animatedgif #war #photography
December 8, 2025 at 6:05 AM