Pith Number

pith:UBMYPPW6

pith:2012:UBMYPPW6DF4U4SADSISXIHYA4E

not attested not anchored not stored refs pending

In the Amemiya-Ando problem 3 is enough

Adam Paszkiewicz

arxiv:1208.0905 v1 · 2012-08-04 · 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{UBMYPPW6DF4U4SADSISXIHYA4E}

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	2026-05-18T03:49:21.159169Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a05987bede19794e48039225741f00e117bb49c56cabfdadeb2c69211701aadc

Aliases

arxiv: 1208.0905 · arxiv_version: 1208.0905v1 · doi: 10.48550/arxiv.1208.0905 · pith_short_12: UBMYPPW6DF4U · pith_short_16: UBMYPPW6DF4U4SAD · pith_short_8: UBMYPPW6

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/UBMYPPW6DF4U4SADSISXIHYA4E \
  | 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: a05987bede19794e48039225741f00e117bb49c56cabfdadeb2c69211701aadc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "63103f67676801c1056facf4c9d96b7360a687d6f349ff6d60daba56cb9c4214",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2012-08-04T08:29:07Z",
    "title_canon_sha256": "608778e6fcc196a0cc8522754a3cf64446ed8414b95e00b81aac9ba5f4637897"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.0905",
    "kind": "arxiv",
    "version": 1
  }
}