Pith Number

pith:2A7IY7VX

pith:2001:2A7IY7VXPWKYI52A5MQXCQ2CJQ

not attested not anchored not stored refs pending

The deformation spaces of convex RP^2-structures on 2-orbifolds

Suhyoung Choi, William Goldman

arxiv:math/0107193 v2 · 2001-07-27 · math.GT · math.GR · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2A7IY7VXPWKYI52A5MQXCQ2CJQ}

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	2026-05-18T04:18:33.472254Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d03e8c7eb77d95847740eb217143424c2e1e005a9f9beb6cbcc534502fe3f17b

Aliases

arxiv: math/0107193 · arxiv_version: math/0107193v2 · doi: 10.48550/arxiv.math/0107193 · pith_short_12: 2A7IY7VXPWKY · pith_short_16: 2A7IY7VXPWKYI52A · pith_short_8: 2A7IY7VX

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/2A7IY7VXPWKYI52A5MQXCQ2CJQ \
  | 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: d03e8c7eb77d95847740eb217143424c2e1e005a9f9beb6cbcc534502fe3f17b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "445366ae50ad7b4d5b2afe0b21c3881bfcf0ea3b0cf666aaae920c0396c88671",
    "cross_cats_sorted": [
      "math.GR",
      "math.RA"
    ],
    "license": "",
    "primary_cat": "math.GT",
    "submitted_at": "2001-07-27T01:46:59Z",
    "title_canon_sha256": "e518fe07bc83366af3fa033dcfa42316206ac2030c31fa5c41fe2d4eab136ac5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0107193",
    "kind": "arxiv",
    "version": 2
  }
}