Pith Number

pith:EIXZPQKP

pith:2015:EIXZPQKPOS6EEQ7KVGVPWZ6FJ3

not attested not anchored not stored refs pending

A characterization of the Khavinson-Shapiro conjecture via Fischer operators

Hermann Render

arxiv:1511.01894 v1 · 2015-11-05 · math.AP · math.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EIXZPQKPOS6EEQ7KVGVPWZ6FJ3}

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	2026-05-18T01:27:39.147511Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

222f97c14f74bc4243eaa9aafb67c54ec778463e668b0b9d3d019d4f62454fb8

Aliases

arxiv: 1511.01894 · arxiv_version: 1511.01894v1 · doi: 10.48550/arxiv.1511.01894 · pith_short_12: EIXZPQKPOS6E · pith_short_16: EIXZPQKPOS6EEQ7K · pith_short_8: EIXZPQKP

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/EIXZPQKPOS6EEQ7KVGVPWZ6FJ3 \
  | 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: 222f97c14f74bc4243eaa9aafb67c54ec778463e668b0b9d3d019d4f62454fb8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e6bf001b9b186d35b0f78b6a1adfa3bc478549be59257dbebc5ab646615ba1eb",
    "cross_cats_sorted": [
      "math.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2015-11-05T14:10:43Z",
    "title_canon_sha256": "bcd60f55ee956829bb1497955c750b48ebf632f243140761034cd984fa63dadd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.01894",
    "kind": "arxiv",
    "version": 1
  }
}