Pith Number

pith:EK25AZAN

pith:2015:EK25AZANQKWTKEPAQS6CMWGHP7

not attested not anchored not stored refs pending

Quasiconformal distortion of projective transformations and discrete conformal maps

Boris Springborn, Stefan Born, Ulrike B\"ucking

arxiv:1505.01341 v2 · 2015-05-06 · math.CV · cs.CG · math.DG · math.MG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EK25AZANQKWTKEPAQS6CMWGHP7}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:47:29.625269Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

22b5d0640d82ad3511e084bc2658c77fd0c62e268acd2579be41a40845016147

Aliases

arxiv: 1505.01341 · arxiv_version: 1505.01341v2 · doi: 10.48550/arxiv.1505.01341 · pith_short_12: EK25AZANQKWT · pith_short_16: EK25AZANQKWTKEPA · pith_short_8: EK25AZAN

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/EK25AZANQKWTKEPAQS6CMWGHP7 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 22b5d0640d82ad3511e084bc2658c77fd0c62e268acd2579be41a40845016147

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3c3f83e1aabf4b392f117eef8d52549e7f8de25ffb2df1a03c0b275ca82b35a9",
    "cross_cats_sorted": [
      "cs.CG",
      "math.DG",
      "math.MG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CV",
    "submitted_at": "2015-05-06T12:34:14Z",
    "title_canon_sha256": "f57093e0da9b55eac316ff4a4c7ee1c76d8cba254597805ea07aa9ba5b4eebad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.01341",
    "kind": "arxiv",
    "version": 2
  }
}