Pith Number

pith:POBDOTOT

pith:1997:POBDOTOTDSQKRX7GDAFV6IEGTQ

not attested not anchored not stored refs pending

Banach spaces with the Daugavet property

Dirk Werner, Gleb Sirotkin, Roman Shvidkoy, Vladimir Kadets

arxiv:math/9709216 v1 · 1997-09-17 · 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{POBDOTOTDSQKRX7GDAFV6IEGTQ}

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	2026-05-18T04:26:44.039071Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b82374dd31ca0a8dfe6180b5f20869c027ecaf4bd8b4d3903b12a9cb1825aee

Aliases

arxiv: math/9709216 · arxiv_version: math/9709216v1 · doi: 10.48550/arxiv.math/9709216 · pith_short_12: POBDOTOTDSQK · pith_short_16: POBDOTOTDSQKRX7G · pith_short_8: POBDOTOT

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/POBDOTOTDSQKRX7GDAFV6IEGTQ \
  | 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: 7b82374dd31ca0a8dfe6180b5f20869c027ecaf4bd8b4d3903b12a9cb1825aee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b1e07140fd9d03a923f2a46944ef499983cf7972c2d951d552e9b90af7bed1f5",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.FA",
    "submitted_at": "1997-09-17T00:00:00Z",
    "title_canon_sha256": "b0e44b95ffd7c96fdcb7ad7eb79cf6d4aae3b1c9583bb864837dfb73b1840137"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9709216",
    "kind": "arxiv",
    "version": 1
  }
}