Pith Number

pith:7E4XT4IU

pith:2014:7E4XT4IUTHEQ7PXSLI3IFRCYJX

not attested not anchored not stored refs pending

Equivariant absolute extensor property on hyperspaces of convex sets

Natalia Jonard-P\'erez

arxiv:1401.2653 v2 · 2014-01-12 · math.FA · math.GN · math.MG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7E4XT4IUTHEQ7PXSLI3IFRCYJX}

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	2026-05-18T02:59:47.357574Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f93979f11499c90fbef25a3682c4584dfa33a2fa44ddabdbecb1bc95315359cf

Aliases

arxiv: 1401.2653 · arxiv_version: 1401.2653v2 · doi: 10.48550/arxiv.1401.2653 · pith_short_12: 7E4XT4IUTHEQ · pith_short_16: 7E4XT4IUTHEQ7PXS · pith_short_8: 7E4XT4IU

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/7E4XT4IUTHEQ7PXSLI3IFRCYJX \
  | 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: f93979f11499c90fbef25a3682c4584dfa33a2fa44ddabdbecb1bc95315359cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dff665587cac014f2cc3a96567e8b38bdc2f27dd44cb1145933bfeaa8397ffa9",
    "cross_cats_sorted": [
      "math.GN",
      "math.MG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2014-01-12T18:05:54Z",
    "title_canon_sha256": "bba48a3021d8e2dbad7fc9e081e4e861906754477fbe39dc4ce852e1a5a95216"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.2653",
    "kind": "arxiv",
    "version": 2
  }
}