Pith Number

pith:SRRRVTIB

pith:2016:SRRRVTIBK2BA2YBOFGWR57ZC2P

not attested not anchored not stored refs pending

New Existence and Nonexistence Results for Strong External Difference Families

Jingjun Bao, Lijun Ji, Ruizhong Wei, Yong Zhang

arxiv:1612.08385 v2 · 2016-12-26 · 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{SRRRVTIBK2BA2YBOFGWR57ZC2P}

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	2026-05-18T00:53:41.848192Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

94631acd0156820d602e29ad1eff22d3c591e73e1f54f90bb446d2ad972b639a

Aliases

arxiv: 1612.08385 · arxiv_version: 1612.08385v2 · doi: 10.48550/arxiv.1612.08385 · pith_short_12: SRRRVTIBK2BA · pith_short_16: SRRRVTIBK2BA2YBO · pith_short_8: SRRRVTIB

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/SRRRVTIBK2BA2YBOFGWR57ZC2P \
  | 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: 94631acd0156820d602e29ad1eff22d3c591e73e1f54f90bb446d2ad972b639a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54f1dab8418897a0d7c6184a61948854ef1588019479ba0bd9560067dd917921",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2016-12-26T14:02:43Z",
    "title_canon_sha256": "a482ca632dfdb6b9b06260648608064f587ab29efca6c2584a2704dc87e709b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.08385",
    "kind": "arxiv",
    "version": 2
  }
}