Pith Number

pith:IRLHIPI6

pith:2008:IRLHIPI6YTREU7N2WINPK3MITV

not attested not anchored not stored refs pending

Hash Property and Coding Theorems for Sparse Matrices and Maximum-Likelihood Coding

Jun Muramatsu, Shigeki Miyake

arxiv:0801.3878 v2 · 2008-01-25 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IRLHIPI6YTREU7N2WINPK3MITV}

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	2026-05-18T03:35:36.938806Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4456743d1ec4e24a7dbab21af56d889d58423e2e2e59248f9c4a77e76b2c6115

Aliases

arxiv: 0801.3878 · arxiv_version: 0801.3878v2 · doi: 10.48550/arxiv.0801.3878 · pith_short_12: IRLHIPI6YTRE · pith_short_16: IRLHIPI6YTREU7N2 · pith_short_8: IRLHIPI6

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/IRLHIPI6YTREU7N2WINPK3MITV \
  | 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: 4456743d1ec4e24a7dbab21af56d889d58423e2e2e59248f9c4a77e76b2c6115

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1612c71ca4f23bf439ac917be2304c0f14204f42a4df35e4adcbdd454d7ef81e",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2008-01-25T05:13:11Z",
    "title_canon_sha256": "2f468e2d22aa3a6571546d86f74a3169e772088f2513176359a821e5fd311a6e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0801.3878",
    "kind": "arxiv",
    "version": 2
  }
}