Pith Number

pith:JVKZR7BO

pith:2015:JVKZR7BO4G2UTHZTPPUIPMUDFO

not attested not anchored not stored refs pending

Error Correcting Index Codes and Matroids

Anoop Thomas, B. Sundar Rajan

arxiv:1501.05060 v1 · 2015-01-21 · 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{JVKZR7BO4G2UTHZTPPUIPMUDFO}

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	2026-05-18T02:29:00.838725Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4d5598fc2ee1b5499f337be887b2832b9c53f94a409112a64c2b9d4596e4cf1b

Aliases

arxiv: 1501.05060 · arxiv_version: 1501.05060v1 · doi: 10.48550/arxiv.1501.05060 · pith_short_12: JVKZR7BO4G2U · pith_short_16: JVKZR7BO4G2UTHZT · pith_short_8: JVKZR7BO

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/JVKZR7BO4G2UTHZTPPUIPMUDFO \
  | 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: 4d5598fc2ee1b5499f337be887b2832b9c53f94a409112a64c2b9d4596e4cf1b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f0ac774756344a93804bbc98f9b44c3a4de819bec7c2b40926b414092f345fc",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-01-21T05:34:55Z",
    "title_canon_sha256": "489e2087de8189c4f87ff8a08ab75a95baf2591855fb2943286f6bf015d37618"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.05060",
    "kind": "arxiv",
    "version": 1
  }
}