Pith Number

pith:ULGUGXB5

pith:2019:ULGUGXB554DHL6Q63SDW5PNJUX

not attested not anchored not stored refs pending

Extreme contractions on finite-dimensional polygonal Banach spaces-II

Anubhab Ray, Debmalya Sain, Saikat Roy, Satya Bagchi

arxiv:1902.06917 v1 · 2019-02-19 · 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{ULGUGXB554DHL6Q63SDW5PNJUX}

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	2026-05-17T23:53:40.432762Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a2cd435c3def0675fa1edc876ebda9a5fdf09bb51cef96ff8b802c5ed4699f36

Aliases

arxiv: 1902.06917 · arxiv_version: 1902.06917v1 · doi: 10.48550/arxiv.1902.06917 · pith_short_12: ULGUGXB554DH · pith_short_16: ULGUGXB554DHL6Q6 · pith_short_8: ULGUGXB5

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/ULGUGXB554DHL6Q63SDW5PNJUX \
  | 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: a2cd435c3def0675fa1edc876ebda9a5fdf09bb51cef96ff8b802c5ed4699f36

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b10efb3938184480afc34ab84c1114fbc6e0238aa58df042501dc27111fdf62b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2019-02-19T06:40:45Z",
    "title_canon_sha256": "412ab7596bde4a159d4c617d5acd3c296ca8af9b8a0027b6f35326b68937b2a7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.06917",
    "kind": "arxiv",
    "version": 1
  }
}