Pith Number

pith:UGWY7WEB

pith:2008:UGWY7WEBZA5CGN2LJAFH6XMUQK

not attested not anchored not stored refs pending

An algebraic approach to the set of intervals

Elisabeth Remm, Nicolas Goze

arxiv:0809.5150 v3 · 2008-09-30 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UGWY7WEBZA5CGN2LJAFH6XMUQK}

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	2026-06-03T22:06:10.309931Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a1ad8fd881c83a23374b480a7f5d9482bdb8e684acd6cd4a346d25336ee83f1c

Aliases

arxiv: 0809.5150 · arxiv_version: 0809.5150v3 · doi: 10.48550/arxiv.0809.5150 · pith_short_12: UGWY7WEBZA5C · pith_short_16: UGWY7WEBZA5CGN2L · pith_short_8: UGWY7WEB

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/UGWY7WEBZA5CGN2LJAFH6XMUQK \
  | 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: a1ad8fd881c83a23374b480a7f5d9482bdb8e684acd6cd4a346d25336ee83f1c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d229b0d03174870321303ab6806e6e3b139768a6a86bc94c8a426e084e5326f",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2008-09-30T09:46:55Z",
    "title_canon_sha256": "62099a7892a47591f2fff5fe66f98c03bba75abf6cb839712042080e10044f1f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.5150",
    "kind": "arxiv",
    "version": 3
  }
}