Pith Number

pith:P4PZWG7L

pith:2017:P4PZWG7LS3BFA3LUIZACKGPZ3X

not attested not anchored not stored refs pending

A remark on semi-infinite cohomology

Xiao He

arxiv:1712.05484 v2 · 2017-12-15 · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P4PZWG7LS3BFA3LUIZACKGPZ3X}

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	2026-05-18T00:10:47.096812Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f1f9b1beb96c2506d7446402519f9ddf7488076e9356343f3dbe8169906f9de

Aliases

arxiv: 1712.05484 · arxiv_version: 1712.05484v2 · doi: 10.48550/arxiv.1712.05484 · pith_short_12: P4PZWG7LS3BF · pith_short_16: P4PZWG7LS3BFA3LU · pith_short_8: P4PZWG7L

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/P4PZWG7LS3BFA3LUIZACKGPZ3X \
  | 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: 7f1f9b1beb96c2506d7446402519f9ddf7488076e9356343f3dbe8169906f9de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "acd10101b41934d9a27c7ce7bdb016de9e814dc078bf83008ab666963e371ec2",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2017-12-15T00:16:37Z",
    "title_canon_sha256": "dfd28cfb27b3bd366156c4b07f535fdc01b88703786f63f16c8e74396f7ef461"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.05484",
    "kind": "arxiv",
    "version": 2
  }
}