Pith Number

pith:YKY6ER4T

pith:2026:YKY6ER4TBTSLMPU7PVG7AUYBZS

not attested not anchored not stored refs pending

A counterexample for the Daugavet index of thickness in $\ell_1$-sums

Andre Ostrak, Rainis Haller

arxiv:2607.02227 v1 · 2026-07-02 · 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{YKY6ER4TBTSLMPU7PVG7AUYBZS}

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	2026-07-03T01:17:45.802164Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c2b1e247930ce4b63e9f7d4df05301cca612434bb5032f3365b19a57b0ec9ec6

Aliases

arxiv: 2607.02227 · arxiv_version: 2607.02227v1 · doi: 10.48550/arxiv.2607.02227 · pith_short_12: YKY6ER4TBTSL · pith_short_16: YKY6ER4TBTSLMPU7 · pith_short_8: YKY6ER4T

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/YKY6ER4TBTSLMPU7PVG7AUYBZS \
  | 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: c2b1e247930ce4b63e9f7d4df05301cca612434bb5032f3365b19a57b0ec9ec6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3d530c2d5ea2419a09dfd6a6b24032b23e35c30c7851f1e5b124eb16c0badca",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2026-07-02T14:28:38Z",
    "title_canon_sha256": "0b941bbd2c028c17914ae5903cd2be00cab09a593755b95504938ec1f54e4c18"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.02227",
    "kind": "arxiv",
    "version": 1
  }
}