Pith Number

pith:VTJEXGLV

pith:2015:VTJEXGLVJDOPV5JTKZWLSBH7KF

not attested not anchored not stored refs pending

On the geometry of normal projections in Krein spaces

Alejandra Maestripieri, Eduardo Chiumiento, Francisco Mart\'inez Per\'ia

arxiv:1504.04253 v1 · 2015-04-16 · math.FA · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VTJEXGLVJDOPV5JTKZWLSBH7KF}

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	2026-05-18T02:18:39.443496Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

acd24b997548dcfaf533566cb904ff5149e9039babee3c4d557fd4590f83f1d1

Aliases

arxiv: 1504.04253 · arxiv_version: 1504.04253v1 · doi: 10.48550/arxiv.1504.04253 · pith_short_12: VTJEXGLVJDOP · pith_short_16: VTJEXGLVJDOPV5JT · pith_short_8: VTJEXGLV

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/VTJEXGLVJDOPV5JTKZWLSBH7KF \
  | 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: acd24b997548dcfaf533566cb904ff5149e9039babee3c4d557fd4590f83f1d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f72547d69c35834ef9e8f1e6542c5fade74abd6443e570e15181810ad9f4e3a",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2015-04-16T14:36:47Z",
    "title_canon_sha256": "914af2d0eaa72f31700d80b09aad71b0569396e01ee7cc5a49e550e4807c281e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04253",
    "kind": "arxiv",
    "version": 1
  }
}