Pith Number

pith:JW4UF2QI

pith:2020:JW4UF2QILZQEMHEPMQNANV6P2C

not attested not anchored not stored refs pending

Diagonal form of the Varchenko matrices for oriented matroids

Assylbek Olzhabayev, Yiyu Zhang

arxiv:2001.06460 v2 · 2020-01-17 · 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{JW4UF2QILZQEMHEPMQNANV6P2C}

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	2026-07-05T00:35:20.541116Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4db942ea085e60461c8f641a06d7cfd0b7c867ba2f7731c1dcaae544f1ae1681

Aliases

arxiv: 2001.06460 · arxiv_version: 2001.06460v2 · doi: 10.48550/arxiv.2001.06460 · pith_short_12: JW4UF2QILZQE · pith_short_16: JW4UF2QILZQEMHEP · pith_short_8: JW4UF2QI

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/JW4UF2QILZQEMHEPMQNANV6P2C \
  | 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: 4db942ea085e60461c8f641a06d7cfd0b7c867ba2f7731c1dcaae544f1ae1681

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1538d3dde430b35ad786a8998c1cc51b1a84b775e9848f0c2ffc6ae5351efdd4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2020-01-17T18:09:05Z",
    "title_canon_sha256": "f371426f09041bad02f96c6be7e8d146fa5fb06e0d5952b99b7fc5e2a60d622a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.06460",
    "kind": "arxiv",
    "version": 2
  }
}