Pith Number

pith:6QGIT7WP

pith:2021:6QGIT7WPLPCDXKSJUQ2T7K5VYM

not attested not anchored not stored refs pending

Existence of The Solution to The Quadratic Bilinear Equation Arising from A Class of Quadratic Dynamical Systems

Bo Yu, Ning Dong, Qiong Tang

arxiv:2107.03847 v1 · 2021-07-08 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6QGIT7WPLPCDXKSJUQ2T7K5VYM}

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	2026-07-05T02:56:19.942309Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f40c89fecf5bc43baa49a4353fabb5c32e57d08754e0bf492f264a3a83618f28

Aliases

arxiv: 2107.03847 · arxiv_version: 2107.03847v1 · doi: 10.48550/arxiv.2107.03847 · pith_short_12: 6QGIT7WPLPCD · pith_short_16: 6QGIT7WPLPCDXKSJ · pith_short_8: 6QGIT7WP

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/6QGIT7WPLPCDXKSJUQ2T7K5VYM \
  | 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: f40c89fecf5bc43baa49a4353fabb5c32e57d08754e0bf492f264a3a83618f28

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "56c619eac981708969c3efff2728c6b608cc758536696d82bff95615e7f24c61",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2021-07-08T13:55:28Z",
    "title_canon_sha256": "1e53e87f6ab84223c65f31125717e77762ee27aebb50d167fce9e1f0932524a4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.03847",
    "kind": "arxiv",
    "version": 1
  }
}