Pith Number

pith:ROPSIEAG

pith:1997:ROPSIEAGJAJ52GL3HGOH332MTR

not attested not anchored not stored refs pending

The compression theorem I

Brian Sanderson, Colin Rourke

arxiv:math/9712235 v3 · 1997-12-09 · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ROPSIEAGJAJ52GL3HGOH332MTR}

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	2026-05-18T02:37:59.344962Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8b9f2410064813dd197b399c7def4c9c7738fa9ecd6c77445ea29ec0aef434b7

Aliases

arxiv: math/9712235 · arxiv_version: math/9712235v3 · doi: 10.48550/arxiv.math/9712235 · pith_short_12: ROPSIEAGJAJ5 · pith_short_16: ROPSIEAGJAJ52GL3 · pith_short_8: ROPSIEAG

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/ROPSIEAGJAJ52GL3HGOH332MTR \
  | 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: 8b9f2410064813dd197b399c7def4c9c7738fa9ecd6c77445ea29ec0aef434b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6dc4daeaf8c52a404ef34d2dc8f56e809715bd89e25d6b7aeb25b42bd887e59d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.GT",
    "submitted_at": "1997-12-09T03:13:24Z",
    "title_canon_sha256": "41a9a76f2fa234e2a7fa9e4c73eb4d8abf1b6549d15c95f65c9f9d0d96802690"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9712235",
    "kind": "arxiv",
    "version": 3
  }
}