Valknut

[2] A wooden bed in the Viking Age Oseberg Ship buried near Tønsberg, Norway, features a carving of the symbol on an ornately stylized bedpost and the Oseberg tapestry fragments, a partially preserved tapestry found within the ship burial, also features the symbol.

This tricursal form can be seen on one of the Stora Hammars stones, as well as upon the Nene River Ring, and on the Oseberg ship bed post.

Odin had the power to lay bonds upon the mind, so that men became helpless in battle, and he could also loosen the tensions of fear and strain by his gifts of battle-madness, intoxication, and inspiration.

[6]Davidson says that similar symbols are found beside figures of wolves and ravens on "certain cremation urns" from Anglo-Saxon cemeteries in East Anglia.

[8] The symbol appears as the fretboard inlay on some of Arch Enemy/Carcass guitarist Michael Amott's signature Dean Guitars "Tyrant" models, and it is also used as a logo by American engineering firm RedViking.

[9] In Civilization VI, the valknut is the national symbol of Norway, which in the game is led by Harald Hardrada and mostly representative of Vikings rather than the modern country.

Valknut variations.
On the left unicursal trefoil forms; on the right tricursal linked triangle forms.
A section of the Stora Hammars I stone in Gotland , Sweden , depicts a valknut in a central and predominant position, appearing alongside figures interpreted as Odin with a characteristic spear shunting another figure into a burial mound while a raven is overhead and another man is hanged.
The Tängelgårda stone from Gotland, Sweden, features valknuts below a depiction of a horse.