Pith Number

pith:N3XV37JO

pith:1994:N3XV37JORRYRVSYH2DBMTHAW3H

not attested not anchored not stored refs pending

Contractive projections and isometries in sequence spaces

Beata Randrianantoanina

arxiv:math/9403207 v1 · 1994-03-04 · 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{N3XV37JORRYRVSYH2DBMTHAW3H}

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	2026-05-18T01:05:51.592494Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6eef5dfd2e8c711acb07d0c2c99c16d9d0ad802944e44c416db1348ebba194ba

Aliases

arxiv: math/9403207 · arxiv_version: math/9403207v1 · doi: 10.48550/arxiv.math/9403207 · pith_short_12: N3XV37JORRYR · pith_short_16: N3XV37JORRYRVSYH · pith_short_8: N3XV37JO

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/N3XV37JORRYRVSYH2DBMTHAW3H \
  | 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: 6eef5dfd2e8c711acb07d0c2c99c16d9d0ad802944e44c416db1348ebba194ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc3a8a3622dcc793133727ab9bf78031a557e4e1785f223f034aa51700c0ad66",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.FA",
    "submitted_at": "1994-03-04T19:29:55Z",
    "title_canon_sha256": "36455e9b4328e615b49ddd6e8af09add7e453e782ddbb34a8a974c69a207f97b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9403207",
    "kind": "arxiv",
    "version": 1
  }
}