Pith Number

pith:PSBRWMZ5

pith:2012:PSBRWMZ5XGYSNPGSKJBJFQQYKR

not attested not anchored not stored refs pending

On the existence of a neutral region

Daniel Reem

arxiv:1208.5045 v1 · 2012-08-17 · cs.CG · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PSBRWMZ5XGYSNPGSKJBJFQQYKR}

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	2026-05-18T03:47:52.023605Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c831b333db9b126bcd2524292c2185471b3b25c02a117e8f7af41a7ec19b3c5

Aliases

arxiv: 1208.5045 · arxiv_version: 1208.5045v1 · doi: 10.48550/arxiv.1208.5045 · pith_short_12: PSBRWMZ5XGYS · pith_short_16: PSBRWMZ5XGYSNPGS · pith_short_8: PSBRWMZ5

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/PSBRWMZ5XGYSNPGSKJBJFQQYKR \
  | 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: 7c831b333db9b126bcd2524292c2185471b3b25c02a117e8f7af41a7ec19b3c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "445da685e5bb20fe3dcbe1d39fed11936b2a29dcc47db6865232614cb8b5f67b",
    "cross_cats_sorted": [
      "math.FA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2012-08-17T19:28:36Z",
    "title_canon_sha256": "347f47da1349e3c45c76410b1bca8118f02cef6b6289a2a68d9aed207b86e524"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.5045",
    "kind": "arxiv",
    "version": 1
  }
}