Pith Number

pith:DGD2DCGG

pith:1994:DGD2DCGGZE523BVN3CZQFGFP3R

not attested not anchored not stored refs pending

An elementary approach to the Daugavet equation

Dirk Werner

arxiv:math/9412212 v1 · 1994-12-12 · 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{DGD2DCGGZE523BVN3CZQFGFP3R}

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	2026-05-18T04:26:44.060584Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1987a188c6c93bad86add8b30298afdc46bf9dff3f5a61a8395af0d8f3e880c9

Aliases

arxiv: math/9412212 · arxiv_version: math/9412212v1 · doi: 10.48550/arxiv.math/9412212 · pith_short_12: DGD2DCGGZE52 · pith_short_16: DGD2DCGGZE523BVN · pith_short_8: DGD2DCGG

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/DGD2DCGGZE523BVN3CZQFGFP3R \
  | 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: 1987a188c6c93bad86add8b30298afdc46bf9dff3f5a61a8395af0d8f3e880c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b9e91e67d69336030be1d505769bd0ff554f9faa3aae5031e79aba2d5b867467",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.FA",
    "submitted_at": "1994-12-12T16:38:10Z",
    "title_canon_sha256": "79c19d8ff1db9458972b7805164017e2eaa53e48b6c261ea24a893035e444f2e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9412212",
    "kind": "arxiv",
    "version": 1
  }
}