Pith Number

pith:7MNZJLJP

pith:2014:7MNZJLJPDMB2ESTOD3ZTWDRVNP

not attested not anchored not stored refs pending

On Qian's problem for $\mathcal{L}_{\infty}$-spaces

Duanxu Dai

arxiv:1402.2123 v4 · 2014-02-10 · 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{7MNZJLJPDMB2ESTOD3ZTWDRVNP}

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	2026-05-18T00:26:16.917655Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb1b94ad2f1b03a24a6e1ef33b0e356bff2a98eb0a89cee6652727e2de390277

Aliases

arxiv: 1402.2123 · arxiv_version: 1402.2123v4 · doi: 10.48550/arxiv.1402.2123 · pith_short_12: 7MNZJLJPDMB2 · pith_short_16: 7MNZJLJPDMB2ESTO · pith_short_8: 7MNZJLJP

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/7MNZJLJPDMB2ESTOD3ZTWDRVNP \
  | 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: fb1b94ad2f1b03a24a6e1ef33b0e356bff2a98eb0a89cee6652727e2de390277

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "10f1b072cd13009431c8829e9c882b1df37a563090dc4bb415b95baaaef40a13",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2014-02-10T12:17:17Z",
    "title_canon_sha256": "417ded441444b9efd5f79b6990499ecb40bfa00f558d079305ea5512e63eebbc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.2123",
    "kind": "arxiv",
    "version": 4
  }
}