Pith Number

pith:3YUCTF3N

pith:2017:3YUCTF3N5TS3YHTDGGXWTAWC5F

not attested not anchored not stored refs pending

A spectral characterisation of t-designs and its applications

Cunsheng Ding, Eun-Kyung Cho, Jong Yoon Hyun

arxiv:1706.00180 v3 · 2017-06-01 · math.CO · 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{3YUCTF3N5TS3YHTDGGXWTAWC5F}

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	2026-05-18T00:13:47.936098Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de2829976dece5bc1e6331af6982c2e95740a30c84003c39a2211d4a1dfed88a

Aliases

arxiv: 1706.00180 · arxiv_version: 1706.00180v3 · doi: 10.48550/arxiv.1706.00180 · pith_short_12: 3YUCTF3N5TS3 · pith_short_16: 3YUCTF3N5TS3YHTD · pith_short_8: 3YUCTF3N

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/3YUCTF3N5TS3YHTDGGXWTAWC5F \
  | 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: de2829976dece5bc1e6331af6982c2e95740a30c84003c39a2211d4a1dfed88a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed337d1b674c55c090b22006538b04a4c31a5c5f69ab6bf0d9dfce03ecc21a1e",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-06-01T06:53:08Z",
    "title_canon_sha256": "19db83f6934be1f66363b8e3cd9627b520d6b8469af9be20b3f9680a2a4a97a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.00180",
    "kind": "arxiv",
    "version": 3
  }
}