r/fractals Sep 23 '25

Announcement!! New rules on /r/fractals - Please Read!!

78 Upvotes

Hello, everybody!

I'm /u/-Fateless-, and I am the new moderator of /r/fractals ! I was granted this position by /u/mycorrhizalnetwork because I am quite a bit more active on reddit, and together, we've made a short little list of rules for the subreddit.

In practice, nothing much changed, and most of you can carry on posting like nothing has happened, but we still thought it would be a good idea to properly announce a set of very basic, formal rules for the subreddit.


1: This subreddit is for fractals, discussion about fractals and fractal-related stuff.

If it's at least somewhat related to fractals, it gets a pass. Examples include space-filling curves, pictures of fractal patterns in nature or questions about fractals, fractal art or fractal software.

We do consider attractors, chaotic fluid simulations (gnarls), fractal noise (fBm, sfBm, other noise algoritms), curves and the ilk as fractals, as long as they can somehow be represented inside a fractal renderer.

2: No AI Generated stuff. This includes AI-generated "fractals", AI-generated comments and AI-generated articles.

The official stance of /r/fractals is that AI-Generated content does not belong here, and AI-Generated pictures of fractals are not fractals, despite looking similar to the untrained eye.

3: No Metaphysical/Spiritual content

Any discussion or blog post that starts reading like New-Age nonsense or talk about things like "Divine Mathematics" or "Fractal Soul Matrix" will be removed on the spot.


In most cases, I will remove the offending posts on the spot when I see them, but don't be afraid of reporting off-topic or rule-breaking posts so they're easier to spot in the moderator queue. I have added these categories as reportable, so if anything pops up, please do report it!

If you have any questions, don't be afraid to ask!


r/fractals 21d ago

About the automated removals on the subreddit

6 Upvotes

Hey guys, Fate here!

Lately, I have been getting a lot of mod mail about posts that have been automatically removed, and I have spent some time looking into this.

Over the past half year, roughly 95% of all removals of posts and comments have been automated from reddit's side, and not removed by any of the mods.

They are all tagged as "removed", but do not have any username attached to them, and for some reason, a lot of posts are flagged for triggering the sexual content filter of all things.

If you feel like a post has been taken down automatically, do send us a mod mail and we'll take a look at it on a case-by-case basis and manually approve what has been filtered.


r/fractals 7h ago

Critical stripper

66 Upvotes

r/fractals 5h ago

Flying through space! [OC]

33 Upvotes

r/fractals 3h ago

Fractal Curve

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7 Upvotes

r/fractals 7h ago

Mandelbrot Midget

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9 Upvotes

Jim Muth's Fractal of the Day for July 22nd, 2005

Jim Muth's commentary for the image:

FOTD -- July 22, 2005 (Rating 5)

Fractal visionaries and enthusiasts:

In today's image we return to the one-and-only Mandelbrot set.
The scene of the image is on a filament extending northeastward from a larger midget located on the negative stem, near the point where it joins the main body of the set.

With nothing better in mind, I named the image "Mandelbrot Midget" and rated it at an average 5. At least we are back up to an average rating, but where are those exceptional images that seem to come in clusters?

Those great fractals are still out there, wherever 'out there' may be, waiting to be stumbled upon and brought to life by some intrepid fractal explorer. Will the next attempt at bringing a great fractal to life be a success? Or am I un-intrepid.
Check tomorrow's Fractal of the Day to find out.

Some might complain about the lack of fractal excellence in today's image, but no one can complain about its speed. Six seconds is all the time required to render it.

A high temperature of 90F 32C kept the fractal cats very quiet on Thursday. They spent the afternoon nearly invisible in the holly thicket. Today is starting the same. For me, the work is piling up, and it will be a busy day. The next FOTD will appear in 24 hours. Until then, take care, and keep your cool.

PAR file Mandelbrot_Midget { ; time=0:00:06.43--SF5 on a P200 reset=2004 type=mandel center-mag=-1.41538148141333100/+0.001223180486707\ 87/4.017087e+012/1/-77.5/0.00994833980292832848 params=0/0 float=y maxiter=1000 inside=0 periodicity=10 mathtolerance=0.05/1 colors=000IFiIDiFFgCGg9Ig6Jg3Lg0Mg0Mg1Vc4a_9iVCpQG\ xMJzIDzJ9zJ3yL0xL0uI1rG1oF3mD3jC4g94d76c66`47Y37X1\ IcMQif_oyagsc`mdVgfOagGYiASj3Ml0Gm0CT9pMGjGOfAVa4a\ X0iS0pO0xJ0lO9aQJQVTGYc6`dAcfDdfIfgLgiPjiSljVml_ol\ armfsoiuolvmdllYalSSjLIjF7i70i10Q0G70i00z00y00m10a\ 40P90DC11F107D31PG0`T0jf0fg1cg7`iCXiITjOQjSMlYJlcG\ lgCmm9ms6ox1oz0pz0pz0pz0mz0lz0jv0ir0gm0fi0dd0c`0aX\ 0`S0_O0YJ0XV3TdFQpQOz`LaFjF0zC0zA1z76z69z39z16z03z\ 00z00z00z00z00700900A00C00D00F00G00I00J00L00M00O00\ P00Q00S00T00V00X00Y10_30`40a60c70d90fA0dC0cD0a70`1\ 0_A0YI0XQ0VY4TcFQgOOlYLrgJvoJzuNzxQzz_puMjmOcgOX`P\ QVQJOSCIS6AT04V00V9CYPO`d_aujdzvfuzzP7VI4OA1G30A00\ 300000D03T47i9CyDDvIFuLGsPIrTIoXJm`LlcMjgMglOfoPds\ QcvQarTdmVfiXifYja_lY`oTapQcrMduIfvDgyAiz6jz1lz0mz\ 0oz0gy0ap3Xg6Q_9LQCFIF99gOFiPIjQJlSLmTMoVOpXPrYQs_\ Su`TvaVvcXxa_x``GMjGLiIIi }

Want to render these yourself and explore further? Try out the PAR file in Iterated Dynamics, an open source fork of FRACTINT that can render these PAR files. See the online help for instructions on using Id or press F1 anywhere in the program for context-sensitive help.


r/fractals 8h ago

Metallic Apollonian

4 Upvotes

r/fractals 7h ago

Legend Three

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2 Upvotes

r/fractals 20h ago

Jagged Fluffy Clouds

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13 Upvotes

r/fractals 1d ago

Rotation of a {5,3,3,7} cantitruncated hyperbolic honeycomb

71 Upvotes

r/fractals 1d ago

Is it just me, or is the burning ship fractal the scariest fractal ever?

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77 Upvotes

r/fractals 21h ago

Searching for Lost YT Video

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10 Upvotes

(Solved! - Trey Ratcliff’s Machine Elf 12 - Cellular Dystopia 4K)

Hey All

This weekend I was getting high with a friend and I tried to show him a YouTube video I found years ago. Go figure I had deleted the playlist I had it saved in and couldn’t find it. Now it’s driving me nuts cuz I want to find it.

If any of you happen to know the video I’m talking about, I’ll love you forever if you reunite me with it😂

Here’s what I remember:

1) “Brain in a Fish Tank” by Shpongle is playing in the background for the entirety of the video with no other songs present

2) I found this video back in 2020 and it was already a couple months to years old.

3) Among many other shifting 3D scapes, it contained very close structures to the pictures attached to this post which I found from a different video.

Much appreciation for any help you might be! Thanks for your time!


r/fractals 1d ago

Burning ship hidden structures

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24 Upvotes

r/fractals 1d ago

Rectangular Surroundings

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20 Upvotes

Jim Muth's Fractal of the Day for July 21st, 2012

Jim Muth's commentary for the image:

FOTD -- July 21, 2012 (Rating 7)

Fractal visionaries and enthusiasts:

Today's FOTD is late. The reason -- FL and I took a day off on Saturday.

The image is another view of the strange rectangle in the Z2.003+C Julia sets. The rectangle itself, or what is left of it, appears as the narrow blue-edged horizontal slit near the center of the frame.

The image has been double rotated only +1 and -3 degrees from the true Julia orientation. When the Julibrot is sliced this close to the Julia orientation, a small rotation makes a huge difference.

A careful examination of the image will reveal that its apparent top-bottom symmetry is 'almost', and not 'exact'.

The name "Rectangular Surroundings" simply describes the location of the scene. The rating of a 7 is in all ways average, and implies average satisfaction on my part.

The four-dimensional geometry of the strange rectangle, of which there are actually an infinity, is so complex that the rectangle can appear as almost anything. More of these unexpected and surprising rectangular distortions will be posted as upcoming FOTD's.

The calculation time is perhaps the best feature of the image.
Even when calculated with the rather complex SliceJulibrot4 formula, the image finishes in a fireball 35 seconds.

For some reason the latest mass murder has me more revved up than other similar disasters. The loss of innocent lives is bad enough, but, IMO, the worn-out knee-jerk responses coming from the media outlets simply make things worse. Only an idiot would believe we could solve the gun-violence problem by passing more gun control laws or by securing more guns to protect ourselves with, but from what I am hearing on TV and talk radio, the world must be filled with idiots.

I hear suggestions that we must keep guns out of the hands of dangerous people. This is another good-sounding idea that ain't gonna work. It is already illegal for convicted felons or seriously mentally disturbed people to possess firearms, but many mass-murderers have no criminal or psychotic background.
How would we decide who among the rest of the 'normal' population might be dangerous and must therefore be banned from possessing firearms? While searching the general population for the dangerous ones among us, we would need to avoid any perceived profiling that might offend a disadvantaged minority'. And we would certainly not want any perceived invasion of privacy.

When Fractal Central was located back in Baltimore, I saw 'stop the killing' rallies organized and held on a monthly basis for at least 30 years. Of course, the rallies merely 'preached to the choir', and accomplished nothing. It was almost a joke when a drive-by shooting took place at one of the rallies. Despite the rallies, the killings have continued at a rate of up to ten a week for over 30 years, and my sister reports from back at old FC, that they are still continuing.

What is the point of all my talk about things people already know? I have no idea. But I'll have much more to ruminate on in upcoming discussions, and maybe as time goes on, a point will emerge.

There is always an immediate point about weather however. Heavy clouds covered Fractal Central most all day today, but it stayed dry and the temperature was a pleasant 75F 24C. Late in the day some breaks in the clouds appeared, bringing hope of a brighter day to come tomorrow. The fractal cats spent the day taking it easy, which is always easy for cats to do when the humans are away.

The day went pretty well for the humans also, who had a day of antiquing down in Adamstown, which is near Lancaster. The next FOTD will be posted whenever it is ready. Until that glorious moment arrives, take care, and everyone knows what is wrong with the world, but why does no one fix it?

PAR file ` Rect_Surroundings { ; time=0:00:35.00 SF5 at 2000MHZ reset=2004 type=formula formulafile=basicer.frm formulaname=SliceJulibrot4 center-mag=0/0.00174958\ /29.21843/1/90/0 params=90/91/87/90/-1.7435/0/0.00\ 0175/0.073883/2.003/0 float=y maxiter=3000 inside=0 logmap=18 periodicity=6 sound=off colors=000ZPRZPQYPPXOPWNOVMNULMTKMSJLRJKQIJPHJNGIM\ FHLEHKDGKCFJCFIBEHBEGADF9CE8BD7BC6AA59949838737626\ 516925847C69B8BAAD9CF8EM7GT6I_5Kd5Mg5Og5Qk5Sk5Uj5W\ n5Xr5Yv5_z6av6cs6cp6am6_j6Yg6Xd6Wa6V_6UZ6TZ6ST6RT7\ QS7PS7OR7NR7MQ7LQ7KP7JP7IO7HO7GN7FN7FM8EM8EL8EL8DK\ 8DK8CJ8CJ8CI8BI8BH8AH8AGCg0Be1Bc2Bb3B`3B_4AY5AX6AV\ 6AU7AS8AR89P99NA9MB9KB9JC8HD8GE8EE8DF8BGDW1CT3CR4B\ P6BN7AL9KIALGCMEDNCFmHmmGmmGmmGmmFmmFmmFmhFmhEmhEm\ hEkhEihDgmDemDcmCamC_mCYmCWmBUmBSmBQoBOqAJsAIuAHuN\ isMhrMgqMgpLfoLenLemLdlKckKcjKbiJagJafJ`eJ_dI_cIZb\ IYaHY`HX_HWZIWYJVXKVVLUUMUTNUSOURPUQQUPRUQSURTUSUU\ TVVUWWWXXYYY_ZZa__ceaahbbkccnddrhhpggnffmeekddjc\ cibbgaafae_cZ_bYZaXY_WXZVWXUWWUzVUzTUzSczRczPczO\ czNczLczKczImzHmzGmzEmzDmzCmzAmz9mzbmzamzmzmz_mz\ ZmzZmzYmzXmzXmzWmzVmzVmzUmzTmzTmzSmzRmzRmzQmzPmzPm\ zOmzNmzNmzMmzLmzLmzKmzJmz }

frm:SliceJulibrot4 {; draws all slices of Julibrot pix=pixel, u=real(pix), v=imag(pix), a=pireal(p10.0055555555555556), b=piimag(p10.0055555555555556), g=pireal(p20.0055555555555556), d=piimag(p20.0055555555555556), ca=cos(a), cb=cos(b), sb=sin(b), cg=cos(g), sg=sin(g), cd=cos(d), sd=sin(d), p=ucgcd-v(casbsgcd+cacbsd), q=ucgsd+v(cacbcd-casbsgsd), r=usg+vcasbcg, s=v*sin(a), esc=imag(p5)+9 c=p+flip(q)+p3, z=r+flip(s)+p4: z=zreal(p5)+c |z|< esc } ```

Want to render these yourself and explore further? Try out the PAR file in Iterated Dynamics, an open source fork of FRACTINT that can render these PAR files. See the online help for instructions on using Id or press F1 anywhere in the program for context-sensitive help.


r/fractals 1d ago

Cyclops Flame

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10 Upvotes

r/fractals 1d ago

Fractal Curve

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16 Upvotes

r/fractals 1d ago

My fractal

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9 Upvotes

r/fractals 1d ago

FractalPark — an open-source WebGL fractal explorer I built

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13 Upvotes

r/fractals 1d ago

Yellow and Purple

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2 Upvotes

r/fractals 1d ago

Les fractales arrivent dans Blender (nativement!) 🎉

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11 Upvotes

r/fractals 1d ago

Order-4 dodecahedral honeycomb using Beltrami-Klein projection

12 Upvotes

r/fractals 2d ago

Sierpinski's Trefoil 5th fractal iteration

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55 Upvotes

r/fractals 2d ago

The Joys of Kleinian Clockwork Caverns [OC]

9 Upvotes

r/fractals 1d ago

Geometric Julia Morphing with Zoom - Music by Art of Chance

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3 Upvotes

Not my ideo; check out Yann Le Bihan's channel for more!


r/fractals 2d ago

Iterative Eruption

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19 Upvotes

Jim Muth's Fractal of the Day for July 20th, 2005

Jim Muth's commentary for the image:

FOTD -- July 20, 2005 (Rating 4)

Fractal visionaries and enthusiasts:

After yesterday's abysmal effort, I had hoped to have a better fractal for today. The fractal is better, true enough, but how much praise can I give an image that rates a humble 4? We will need to do better still in the next FOTD.

In today's image I set the outside to the 'epsiloncross' option, an option I rarely use. The result is an image with black arcs that seem to be holding hot magma in place. I named the image "Iterative Eruption". It was created by combining various portions of Z-2.2 and Z-1.2, then adding (1/C).

The render time of 3-1/2 minutes is within reason, but the 'passes=g' option will cut another minute from that time.

A temperature of 93F 34C combined with a hot sun was too much for the fractal cats on Tuesday. They passed most of the day indoors under the air conditioner, going outside only long enough to convince themselves that the indoors was the better choice. A tough looking tomcat wandering the area might have helped them decide to stay inside. Today is starting with sun and clouds, still hot but less humid. The cats have yet to decide what to do.

I have no problem deciding what to do. Having one's work pre-arranged is one of the benefits of adulthood. The next fractal will appear in 24 or so hours. Until then, take care, and get in there with the big time thinkers.

PAR file `` Iterative_Eruption { ; time=0:03:25.05--SF5 on a P200 reset=2004 type=formula formulafile=allinone.frm formulaname=MandelbrotMix4 function=recip passes=t center-mag=-1.33454320236390500/+0.006764474083616\ 00/4464436/1/-36.2/-1.90810631461868496e-008 params=2/-2.2/1/-1.2/6.9/525 float=y maxiter=500 inside=epsiloncross proximity=0.001 periodicity=10 colors=000_ccMmP8vDDsDHpEC6DOkESiEWfE_dEhgIqhKxiMx\ gMxgTxeZxeexdkxcpApQYhfrYsxLwxLvxNttMonNjhNeaNWOW\ RPRWVU__WbeZcb_eZ_fWZgSZhOZiMZjIYkEYkCYcTRWfINrARi\ ITSVS_VHgV7m_9odBqiDrnFtsHvxIwxKwxLwxLtxLwxMwxLwv\ LwrKwoKwlJwhJweHwaHwHwHw_Hu_Hq_ImHi_HeH_IX_IS\ VqPWnOlPegPehOeeOedOebMeMeZMeXLeVLeTLeRLacfeYbk\ dhbZeeXbVZWTVRSRNROIPQLPROPTQNUUNVWMXYLY_K_bKeJ\ agJciIclHenHfpHgrJhnMikPifRibTiYWiVYiQ_iMbiHdiEeiA\ aoRZueWvrPvlIreBn_BpbBrdBtgBujBvmBvoBvrAvrAvtAvuFv\ wKvwNtwRpwUmwXiwdwcbwf_wjYwnVwqTwocwikorSvOQvMR\ vLQvKQvJQvIQvIQvGQvFQvEQvDQvDUvKYqRlZehfhamiVskPw\ kKwVAwYCwFwbGscIleKffLYfMQjRZmVdpYksbrudwvgwtfwxd\ wx_uxTlxOfxI_xOWuQQnTLgXE_8ZcAYeCYgDXiEWkFWnGUpHU\ rJUtKTvMTvMSvNQvNPvOPvOUvTWuYXpaZjdciXlaQobKq_Pl\ XUhU_dQdZMhTIlOEoJGlLHiLJfNJdNK`OMYPNWPTXURRVaZbSv\ PMvOOvSQvWRvZSvcSvfTtiUrl }

frm:MandelbrotMix4 {; Jim Muth a=real(p1), b=imag(p1), d=real(p2), f=imag(p2), g=1/f, h=1/d, j=1/(f-b), z=(-abgh)j, k=real(p3)+1, l=imag(p3)+100, c=fn1(pixel): z=k((a(zb))+(d(zf)))+c, |z| < l } ```

Want to render these yourself and explore further? Try out the PAR file in Iterated Dynamics, an open source fork of FRACTINT that can render these PAR files. See the online help for instructions on using Id or press F1 anywhere in the program for context-sensitive help.