Pith Number

pith:3CDN2D2O

pith:2019:3CDN2D2ODFPYWJFVKXZRVWYOGL

not attested not anchored not stored refs pending

A note on essentially left $\phi$-contractible Banach algebras

A. Sahami, I. Almasi

arxiv:1907.05225 v1 · 2019-07-11 · 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{3CDN2D2ODFPYWJFVKXZRVWYOGL}

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	2026-05-17T23:40:51.121061Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d886dd0f4e195f8b24b555f31adb0e32cf5cc0a922402dd497d7c22c7112b679

Aliases

arxiv: 1907.05225 · arxiv_version: 1907.05225v1 · doi: 10.48550/arxiv.1907.05225 · pith_short_12: 3CDN2D2ODFPY · pith_short_16: 3CDN2D2ODFPYWJFV · pith_short_8: 3CDN2D2O

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/3CDN2D2ODFPYWJFVKXZRVWYOGL \
  | 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: d886dd0f4e195f8b24b555f31adb0e32cf5cc0a922402dd497d7c22c7112b679

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "25a18a67ba558da731879d74f6e121e0807bb299033da88437c98bf7344e0548",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2019-07-11T14:15:30Z",
    "title_canon_sha256": "2755565b5c03ec7692f148c376e785db1001b4fa47c1eba6e0b0495b143820e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.05225",
    "kind": "arxiv",
    "version": 1
  }
}