Pith Number

pith:A7AMNU5W

pith:2009:A7AMNU5WEVTHXBER55WJPOFVRX

not attested not anchored not stored refs pending

Some small orbifolds over polytopes

Soumen Sarkar

arxiv:0912.0777 v4 · 2009-12-04 · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A7AMNU5WEVTHXBER55WJPOFVRX}

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	2026-05-18T04:22:40.476299Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07c0c6d3b625667b8491ef6c97b8b58dca0e4ca21470603584f96cef7dc7755e

Aliases

arxiv: 0912.0777 · arxiv_version: 0912.0777v4 · doi: 10.48550/arxiv.0912.0777 · pith_short_12: A7AMNU5WEVTH · pith_short_16: A7AMNU5WEVTHXBER · pith_short_8: A7AMNU5W

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/A7AMNU5WEVTHXBER55WJPOFVRX \
  | 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: 07c0c6d3b625667b8491ef6c97b8b58dca0e4ca21470603584f96cef7dc7755e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5d3b9ae24b01ea0cee843f6c8ede2ca95c68ca6ae4be85493a4a96e94abb49e2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2009-12-04T05:45:48Z",
    "title_canon_sha256": "c639d4e05e2ceeec8aa79aab2c1bdde509c4e847bd6b349d571b42c07f8702e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.0777",
    "kind": "arxiv",
    "version": 4
  }
}