Pith Number

pith:6OS47ZK2

pith:1995:6OS47ZK2ADOQOBNVHEEN76MCDO

not attested not anchored not stored refs pending

The Daugavet equation for operators on function spaces

Dirk Werner

arxiv:math/9507215 v1 · 1995-07-28 · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6OS47ZK2ADOQOBNVHEEN76MCDO}

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	2026-05-18T04:26:44.053377Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f3a5cfe55a00dd0705b53908dff9821bb39e24d8c3dd41256f7c876301ffdfc4

Aliases

arxiv: math/9507215 · arxiv_version: math/9507215v1 · doi: 10.48550/arxiv.math/9507215 · pith_short_12: 6OS47ZK2ADOQ · pith_short_16: 6OS47ZK2ADOQOBNV · pith_short_8: 6OS47ZK2

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/6OS47ZK2ADOQOBNVHEEN76MCDO \
  | 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: f3a5cfe55a00dd0705b53908dff9821bb39e24d8c3dd41256f7c876301ffdfc4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb3ce0375d6e9dc166b5e545b4089a4d7db5c10b085eb001c733ca0d1eb18dd9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.FA",
    "submitted_at": "1995-07-28T00:00:00Z",
    "title_canon_sha256": "f11c51f13eba3b489164b61c32c387efa2edf9680098cb4e70ec9de18fa8986a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9507215",
    "kind": "arxiv",
    "version": 1
  }
}