Pith Number

pith:VQ6DQVS6

pith:2017:VQ6DQVS6P744425FLHHHKPXMLP

not attested not anchored not stored refs pending

Investigate Invertibility of Sparse Symmetric Matrix

Feng Wei

arxiv:1712.04341 v2 · 2017-12-10 · math.PR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VQ6DQVS6P744425FLHHHKPXMLP}

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	2026-05-18T00:17:32.992572Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac3c38565e7ff9ce6ba559ce753eec5bedbe0488f15580578df223135e8923c5

Aliases

arxiv: 1712.04341 · arxiv_version: 1712.04341v2 · doi: 10.48550/arxiv.1712.04341 · pith_short_12: VQ6DQVS6P744 · pith_short_16: VQ6DQVS6P744425F · pith_short_8: VQ6DQVS6

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/VQ6DQVS6P744425FLHHHKPXMLP \
  | 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: ac3c38565e7ff9ce6ba559ce753eec5bedbe0488f15580578df223135e8923c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b2452a32490f5fb2b89a297fa54d3b37ec1655b3cd6edbde500e3369fe20396",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.PR",
    "submitted_at": "2017-12-10T04:02:09Z",
    "title_canon_sha256": "45fe6a3a01992f1f2a8d9dffb45d8809e3422fd65371a49b59c9c622f8de3ed9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.04341",
    "kind": "arxiv",
    "version": 2
  }
}