Pith Number

pith:IQQBPKFL

pith:2016:IQQBPKFLXKXWC4BFGY4K4RIMWM

not attested not anchored not stored refs pending

Squares that Look Round: Transforming Spherical Images

Henry Segerman, Saul Schleimer

arxiv:1605.01396 v1 · 2016-05-04 · cs.GR · math.HO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IQQBPKFLXKXWC4BFGY4K4RIMWM}

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	2026-05-18T01:15:36.894159Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

442017a8abbaaf6170253638ae450cb320b831f2a74b0a924d884e05d433ae1f

Aliases

arxiv: 1605.01396 · arxiv_version: 1605.01396v1 · doi: 10.48550/arxiv.1605.01396 · pith_short_12: IQQBPKFLXKXW · pith_short_16: IQQBPKFLXKXWC4BF · pith_short_8: IQQBPKFL

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/IQQBPKFLXKXWC4BFGY4K4RIMWM \
  | 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: 442017a8abbaaf6170253638ae450cb320b831f2a74b0a924d884e05d433ae1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "14c6911db0499fb572c6cd05ec2d7dc8ae629dbf58da38605fbef2b158a00987",
    "cross_cats_sorted": [
      "math.HO"
    ],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "cs.GR",
    "submitted_at": "2016-05-04T19:45:32Z",
    "title_canon_sha256": "780eb586376bd7f6080f62e546d51cba8ba24232f827a2897618bb2c754c5038"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.01396",
    "kind": "arxiv",
    "version": 1
  }
}