Pith Number

pith:NPNYKFYU

pith:2015:NPNYKFYUUKHGJSDXDGG2IRPES7

not attested not anchored not stored refs pending

On Erasure Combinatorial Batch Codes

Carl Mummert, Elizabeth Niese, JiYoon Jung, Michael W. Schroeder

arxiv:1511.04580 v2 · 2015-11-14 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NPNYKFYUUKHGJSDXDGG2IRPES7}

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	2026-05-18T00:07:55.842491Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bdb851714a28e64c877198da445e497d11d5a8ef2e8f84a19b958708c3c82f0

Aliases

arxiv: 1511.04580 · arxiv_version: 1511.04580v2 · doi: 10.48550/arxiv.1511.04580 · pith_short_12: NPNYKFYUUKHG · pith_short_16: NPNYKFYUUKHGJSDX · pith_short_8: NPNYKFYU

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/NPNYKFYUUKHGJSDXDGG2IRPES7 \
  | 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: 6bdb851714a28e64c877198da445e497d11d5a8ef2e8f84a19b958708c3c82f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "abe2195d85bf70454f5d522a51561c1737da481dcfe7d518259d947f21026fe7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-11-14T17:09:15Z",
    "title_canon_sha256": "58f0c4595fe620a6b6205286d6202571dcc842a95b0044cbf700313c85de8d49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.04580",
    "kind": "arxiv",
    "version": 2
  }
}