Pith Number

pith:VMRQLZN6

pith:2017:VMRQLZN6ZYJGR72RLOU5UCSXBJ

not attested not anchored not stored refs pending

Updating quadratic palindromic models with no spillover effect on unmeasured spectral data

Kang Zhao, Lizhi Cheng, Shengguo Li, Wei Peng

arxiv:1708.03075 v3 · 2017-08-10 · math.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{VMRQLZN6ZYJGR72RLOU5UCSXBJ}

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	2026-05-18T00:15:05.438648Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ab2305e5bece1268ff515ba9da0a570a56782e5f31ae4ff3d6552002aa007d9a

Aliases

arxiv: 1708.03075 · arxiv_version: 1708.03075v3 · doi: 10.48550/arxiv.1708.03075 · pith_short_12: VMRQLZN6ZYJG · pith_short_16: VMRQLZN6ZYJGR72R · pith_short_8: VMRQLZN6

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/VMRQLZN6ZYJGR72RLOU5UCSXBJ \
  | 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: ab2305e5bece1268ff515ba9da0a570a56782e5f31ae4ff3d6552002aa007d9a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4cbf0fd3b965e662ba4716ce16c051cc68fddc79578163589f43812fe03c9534",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-08-10T04:45:37Z",
    "title_canon_sha256": "f67b2f49099f7c4bf0de0c864ad6b00665c01a858ac921cef1478b7f7a3479b8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.03075",
    "kind": "arxiv",
    "version": 3
  }
}