THE MOST POWERFUL
CAMERA FOR iPHONE & iPAD.

Now with Process Zero - for zero-AI, minimally processed shots.

Featuring the best photography tools on iOS, built-in lessons, Lock Screen access, and many more features for getting the best shot.
Introduction To Topology Mendelson Solutions
two phones on angled displaying the app halide
Group 3 NEW
Hello, iPad

Meet Halide for iPad. Packed with all the powerful features of Halide for iPhone and a few special ones for better photography on big screens.

Enjoy the brand-new, completely custom iPad interface and features like Pro View to get a scaled-down, unobstructed view of your shot with plenty of space for your Pro tools and readouts.

canister
two phones on angled displaying the app halide
Updated
and Upgraded

Always up to date — now with iOS 18 Lock Screen Capture. Halide packs intuitive gestures, gorgeous details, and effortless ease of use.

Designed to be used with one hand on all phones without compromising on power.

New in Mark II: Edge gestures for mode switching. Tactile Touch enables and disables focus and exposure aids as you need them. Designed with three new, custom typefaces.

Photo with a phone and text in the background
Pro Tools XDR

Halide Mark II packs the best pro camera tools on the App Store.

Check for accurate exposures with the new extended dynamic range (XDR) 14-bit color zebras and waveforms.

Use your ideal histogram with large and small displays featuring monochrome and color options. Perfect manual focus with automatic enhanced focus peaking and a new focus loupe.

Your Creative Process
Your Creative Process

You might love your iPhone's super-smart, AI based image processing, or you might not.

That's why Halide lets you pick your processing — even between shots. Choose from iPhone's default image processing, or reduced processing, or choose Process Zero: a single-shot RAW capture mode that gives you beautiful film-like shots with minimal processing and zero AI right out of the camera.

The new Image Lab lets you re-develop the shot later for different exposures, or you can edit your photo in an image editor with huge flexibility — because Halide saves raw sensor data along with your shot.

laying iphone
And much more
Process Zero is just one of our many latest and greatest features that we've rolled out to users over the last seven years. Check out some of the new updates:
Halide Mark II: now for iOS 18, with Process Zero
Updated for the latest and greatest devices and built for the newest version of iOS.
lux.camera
Redisgned photo
WHAT MAKES HALIDE SPECIAL
Halide is the award-winning camera app made by three friends. Here’s what makes it unique.
Designed like a real camera

Halide was designed with our favorite object in mind: the delightfully tactile and beautiful film camera, without compromising on the flexibility and power of mobile photography.

Gestures are modeled after the intuitive manipulation of dials: swiping up and down for exposure, and left and right for focus. The interface is simple and free of clutter, letting you focus on your artistic process.

We pay homage to the design heritage of more than a century of camera design with completely custom typefaces and typography throughout based on etched type on camera bodies and lenses.

Introduction To Topology Mendelson Solutions Jun 2026

Mendelson’s book, with its concise prose and challenging exercises, is the perfect instructor. A good set of solutions is not a crutch; it is a mirror. It shows you where your reasoning breaks down and provides a template for rigorous mathematical writing.

If you are stuck on a proof involving an arbitrary topological space, test the statement against the Discrete Topology (where every set is open) and the Indiscrete Topology (where only the empty set and the whole space are open). This will often show you why a specific condition in the exercise is necessary. Conclusion Introduction To Topology Mendelson Solutions

If you are currently working through this textbook, I can help you: Mendelson’s book, with its concise prose and challenging

Navigating the exercises in Mendelson requires a strong grasp of proofs. Here are key areas where students frequently seek out : 1. Topological Spaces (Basis and Open Sets) If you are stuck on a proof involving

: Provides detailed, handwritten, and scanned solutions for Chapter 1 through Chapter 3. This is particularly useful for undergraduates as the author explains their proof-building process.

We hope that this article has been helpful in providing an introduction to topology and solutions to some of the exercises in Mendelson's book. Happy learning!

And lots more
icon more techreadout
Technical Readout
icon more applewatch
Apple Watch app
icon more siri shortcuts
Siri Shortcuts
icon more customize
Customizable
Introduction To Topology Mendelson Solutions
DCI-P3 Color
icon more raw
RAW + Process Zero
icon more depthexport
Depth Map Export
icon more histogram
Histograms
icon more zebras
Color Zebras
icon more waveform
Waveform
icon more metadata
Metadata View
icon more wb
Custom White Balance
get Halide!
GET HALIDE NOW
Now on the App Store — with a free 1 week trial at signup:
Check out our Press Kit. You can also .
MADE BY LUX
Lux is Ben Sandofsky, Sebastiaan de With, two friends that are reimagining what photography can look like in the 21st century. We advise and consult with companies on camera and photographic technology, and write detailed articles about iPhone and iPad cameras and photography on our blog.
Check out our other app, Kino:
The best pro iPhone video camera
Shown in Apple's "Glowtime" September event