Pith Number

pith:EVQYXFPU

pith:2014:EVQYXFPUU2PBPSV4JNMVMHSJ2B

not attested not anchored not stored refs pending

A remark on the discriminant of Hill's equation and Herglotz functions

Konstantin Pankrashkin

arxiv:1401.1662 v1 · 2014-01-08 · math.CA · math.CV · math.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EVQYXFPUU2PBPSV4JNMVMHSJ2B}

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	2026-05-18T02:57:44.776279Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25618b95f4a69e17cabc4b59561e49d056394e5f81ef2e706d5ce7ae8a16bebd

Aliases

arxiv: 1401.1662 · arxiv_version: 1401.1662v1 · doi: 10.48550/arxiv.1401.1662 · pith_short_12: EVQYXFPUU2PB · pith_short_16: EVQYXFPUU2PBPSV4 · pith_short_8: EVQYXFPU

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/EVQYXFPUU2PBPSV4JNMVMHSJ2B \
  | 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: 25618b95f4a69e17cabc4b59561e49d056394e5f81ef2e706d5ce7ae8a16bebd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "821a812278c82647047160eaffa9c7a2204c8585157777059b959f30ee6ce925",
    "cross_cats_sorted": [
      "math.CV",
      "math.SP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2014-01-08T11:12:20Z",
    "title_canon_sha256": "c69967b72f0864b1171ed35c57e275d0ef39674e3739677586991ef29f3a97e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.1662",
    "kind": "arxiv",
    "version": 1
  }
}